Module 4
Foreign Exchange Assignment
a. Foreign Exchange Basics
After graduation, you are planning to travel to Europe. You would like to see
the Eiffel Tower in Paris, the Colosseum in Rome, and the Parthenon in Athens. As
you pack, you worry a little about paying your hotel bills and the tab for all that great
food you expect to eat. The servers in French, Italian, and Greek restaurants aren’t
interested in your dollar bills; they want to be paid in their own currency. But you are
fortunate, for while the French, Italians, and Greeks speak different languages, they
all use the same coins and bills. In fact, buying anything in Europe—at least in the
countries that are members of the European Monetary Union—means exchanging
your dollars for euros.
When considering international trade and finance, understanding the dollar-
euro exchange rate becomes crucial. This rate determines the price at which one
currency, the euro, can be exchanged for another, the US dollar, on the foreign
exchange market. It directly impacts various economic aspects, including exports and
imports between the United States and the Eurozone countries.
For businesses, a favorable exchange rate can enhance profitability by
lowering the cost of imported goods or making exported goods more competitive in
foreign markets. Conversely, an unfavorable exchange rate can increase costs or
reduce revenues, influencing corporate strategies and financial planning.
Governments also closely monitor exchange rates as they affect national
economies. A strong dollar relative to the euro might support cheaper imports for
American consumers but could hamper exports, potentially leading to trade
imbalances. Central banks often intervene in currency markets to stabilize exchange
rates or achieve specific economic objectives, such as controlling inflation or
promoting economic growth through exports.
Moreover, investors track exchange rates for investment decisions, as currency
fluctuations can affect the returns on international investments. Understanding and
forecasting these fluctuations require analyzing various economic indicators,
geopolitical events, and monetary policies of both the United States and the Eurozone.
In summary, the dollar-euro exchange rate is not merely a number but a
critical indicator reflecting global economic health, influencing businesses,
governments, and investors alike in their decisions and strategies.
Exchanging dollars for euros is like any other economic transaction: you are
using your money to buy something—in this case, money to spend in another country.
The price you pay for this currency is called the nominal exchange rate, or simply the
exchange rate. Formally defined, the nominal exchange rate is the rate at which one
can exchange the currency of one country for the currency of another country. The
dollar– euro exchange rate is the number of dollars you can get for each euro. In
January 2019, one euro (the symbol for the euro is €) would buy roughly $1.14. So an
American who went to Europe in January 2019 paid about $114 for €100.
The dollar-euro exchange rate is a fundamental metric in international finance,
representing the value of one currency in terms of another. Typically quoted as the
number of dollars needed to buy one euro, this rate plays a pivotal role in global trade,
investment, and economic policies.
Historically, the euro was introduced as an accounting currency in 1999 and
became physical tender in 2002. At its inception, the exchange rate was set at
approximately $1.17 per euro. This rate marked a significant moment in global
financial history, as the euro emerged as a major international currency alongside the
US dollar, challenging the dollar's longstanding dominance in global transactions.
The fluctuation of the dollar-euro exchange rate since then has been influenced
by a myriad of factors. Economic indicators such as inflation rates, interest rates, and
GDP growth rates in the United States and the Eurozone heavily impact the exchange
rate. For instance, higher interest rates in the US relative to the Eurozone tend to
strengthen the dollar against the euro, as investors seek higher returns on their
investments in dollar-denominated assets.
Political and geopolitical events also play a crucial role in shaping exchange
rate movements. Elections, trade policies, and geopolitical tensions can create
uncertainty in currency markets, leading to volatility in exchange rates. For example,
Brexit negotiations between the United Kingdom and the European Union caused
fluctuations in the euro-dollar exchange rate, reflecting market sentiment and
expectations regarding the economic impact of Brexit on both economies.
Central banks, particularly the Federal Reserve in the US and the European
Central Bank (ECB), play a significant role in influencing exchange rates through
monetary policy decisions. Actions such as interest rate adjustments, quantitative
easing programs, and currency interventions can directly impact the value of the
dollar relative to the euro. These interventions are often aimed at achieving domestic
economic objectives, such as controlling inflation, promoting economic growth, or
maintaining currency stability.
The dollar-euro exchange rate also has profound implications for businesses
engaged in international trade. Exporters and importers must manage currency risk,
which arises from fluctuations in exchange rates. A strong dollar can make US exports
more expensive for foreign buyers, potentially reducing export volumes and
profitability for US businesses. Conversely, a weaker dollar may enhance export
competitiveness but increase the cost of imported goods for US consumers.
In conclusion, the dollar-euro exchange rate is a dynamic indicator reflecting
the complex interplay of economic fundamentals, geopolitical developments, and
monetary policies. Understanding its movements and implications is crucial for
businesses, policymakers, and investors navigating the global economy and financial
markets.
In October 2000, less than two years after its previous exchange rate, the
currency underwent a significant decline in value, dropping to just 83 cents relative to
another major currency. This abrupt devaluation exemplified a pronounced
depreciation, where the currency's purchasing power eroded considerably compared
to its counterpart. Currency depreciation, a term used to describe the decline in the
value of one currency relative to another, can have far-reaching effects on economies,
influencing various aspects of domestic and international financial landscapes.
The causes of currency depreciation can vary widely. Economic fundamentals
such as inflation differentials, interest rates, and trade balances often play crucial
roles. For instance, if a country experiences higher inflation rates than its trading
partners, its currency may depreciate as its purchasing power decreases relative to
theirs. Similarly, lower interest rates or unfavorable trade balances can lead to reduced
demand for a currency in global markets, further contributing to its depreciation.
The impact of currency depreciation extends beyond simple exchange rate
adjustments. Economies heavily reliant on imports may face higher costs for foreign
goods and services, potentially leading to increased inflationary pressures
domestically. On the other hand, exporters might benefit from a weaker currency, as
their goods become more competitive in international markets, boosting export
revenues and potentially stimulating economic growth.
Governments and central banks closely monitor currency movements and
often intervene to manage exchange rates. Intervention strategies can range from
direct market interventions—where central banks buy or sell their own currencies—to
indirect measures such as adjusting interest rates or implementing fiscal policies
aimed at stabilizing currency values. The effectiveness of these interventions varies
depending on market conditions, economic policies, and global economic trends.
Currency depreciation can also impact investor confidence and financial
markets. Investors may react to currency movements by reallocating their portfolios,
favoring assets denominated in stronger currencies or hedging against potential losses.
Stock markets and bond yields can experience volatility in response to currency
fluctuations, influencing overall market sentiment and investment flows.
In the context of international trade, currency depreciation can affect trade
balances. A weaker currency typically makes exports more attractive and imports
more expensive, potentially narrowing trade deficits or even turning them into
surpluses over time. However, prolonged depreciation without corresponding
improvements in productivity or competitiveness can pose risks, such as increased
debt burdens for countries with significant foreign currency-denominated liabilities.
For businesses operating in global markets, currency depreciation introduces
both risks and opportunities. Multinational corporations may face higher costs for
imported raw materials or components but could benefit from increased
competitiveness in export markets. Small and medium-sized enterprises (SMEs) with
limited hedging capabilities may be particularly vulnerable to currency fluctuations,
requiring strategic planning and risk management strategies to mitigate potential
losses.
In conclusion, currency depreciation is a complex phenomenon with
multifaceted implications for economies, businesses, and individuals worldwide.
While a weaker currency can enhance export competitiveness and stimulate economic
activity in the short term, its long-term effects depend on a variety of factors including
economic policies, global market conditions, and investor sentiment. Understanding
the dynamics of currency depreciation is essential for policymakers, investors, and
market participants seeking to navigate the challenges and opportunities presented by
global financial markets.
At the same time that the euro was falling in value, the dollar was rising. After
all, if you can buy fewer dollars with one euro, you can get more euros for one dollar.
The rise in the value of one currency relative to another is called an appreciation
ofEthe currency that is rising in value. During 1999 and 2000, the euro’s
depreciationEwas matched by the dollar’s appreciation; they are really one and the
same. When one currency goes up in value relative to another, the other currency must
goEdown. Note that, theoretically, exchange rates can be quoted in units of either
currency—for example, as the number of dollars needed to buy one euro or as the
number of euros needed to buy one dollar. The two prices are equivalent; one is
simply the reciprocal of the other. In practice, however, each currency has its
convention.
In international currency markets, different currencies are quoted using
specific conventions that reflect their exchange rates relative to other major currencies
such as the US dollar. Understanding these conventions is essential for participants in
global finance, from traders and investors to businesses engaged in international trade.
The British pound (symbol: £) and the euro (symbol: €) are both quoted in a
similar manner in foreign exchange markets. When discussing the exchange rate of
the British pound, it is quoted as the number of US dollars required to purchase one
pound (£). For example, if the exchange rate is 1.35 USD/GBP, this means that 1.35
US dollars are needed to buy one British pound. This quotation method is known as
the direct quotation, where the price of one unit of the foreign currency (in this case,
the pound) is stated in terms of the domestic currency (the US dollar).
Conversely, the Japanese yen (symbol: ¥) is quoted differently. The exchange
rate for the yen is typically stated as the number of yen that can be purchased with one
US dollar. For instance, if the exchange rate is 110 JPY/USD, this indicates that 110
Japanese yen are equivalent to one US dollar. This quotation method is called the
indirect quotation, where the price of one unit of the foreign currency (the yen) is
given in terms of the domestic currency (the US dollar).
These quoting conventions have historical roots and reflect different economic
and trading relationships between currencies. Direct quotation, used for the pound and
the euro, is common among major currencies where the US dollar serves as a
benchmark. It simplifies comparisons and calculations for market participants who
primarily deal in US dollars. In contrast, the indirect quotation used for the yen is also
prevalent, particularly in East Asian markets and regions where the yen plays a
significant role in trade and finance.
The exchange rates quoted for currencies such as the pound and the yen are
influenced by various factors, including economic data releases, monetary policy
decisions by central banks, geopolitical events, and market sentiment. Fluctuations in
exchange rates can have significant implications for international trade, investment
returns, and macroeconomic stability.
For businesses engaged in global commerce, understanding currency quoting
conventions is crucial for managing foreign exchange risk. Companies may use
hedging strategies such as forward contracts or options to protect against adverse
movements in exchange rates that could affect profitability or cash flow. Similarly,
investors and financial institutions monitor exchange rate movements closely, seeking
opportunities to capitalize on currency fluctuations through speculative trading or
strategic asset allocation.
In conclusion, the quoting conventions for the British pound and the Japanese
yen in international currency markets reflect their exchange rates relative to the US
dollar and other major currencies. Direct quotation for the pound and euro simplifies
comparisons with the US dollar, while indirect quotation for the yen reflects its
exchange rate against the dollar. These conventions facilitate efficient trading and
investment decisions in global financial markets, where currency dynamics play a
crucial role in shaping economic outcomes and opportunities for market participants
worldwide.
Unfortunately, there is no simple rule for determining which way a particular
exchange rate should be quoted. Most rates tend to be quoted in the way that yields a
number larger than one. The fact that €1 equaled $1.17 when the euro was created on
January 1, 1999, is the likely explanation for why we talk about the number of dollars
needed to purchase one euro. Ever since, people have quoted dollars per euro, even
though there have been significant periods of time when the number was less than
one. If you need to guess which way to quote an exchange rate, the best guess is that it
is the way that yields a number larger than one. But the real solution is always to state
the units explicitly, to avoid confusion.
While it may be interesting to know that one euro is worth about $1.14, you
are interested in more than just the rate at which one country’s currency can be
exchanged for another. What you really want to know when you travel to Europe is
how much you can buy with that euro. When all is said and done, will you return
home thinking that your trip was cheap or expensive? Because nominal exchange
rates do not provide an answer to this question, we now turn to the concept of a real
exchange rate, the rate at which one can exchange the goods and services from one
country for the goods and services from another country. It is the cost of a basket of
goods in one country relative to the cost of the same basket of goods in another
country. To grasp this concept, we will start with the real exchange rate between two
cups of espresso, one American and the other Italian. The local Starbucks charges
$3.42 for an espresso; in Florence, Italy, a cup of espresso costs €1.50. (Yes, the
Italian version is better, but for the sake of the example, let’s pretend they’re the
same.) Using the nominal dollar–euro exchange rate as of January 2019, $1.14 per
euro, this means that to buy an espresso in Florence, you need to spend $1.71. More
important, you can exchange one cup of Starbucks espresso for 2 cups of Italian
espresso.
When travelers return from trips abroad, they often notice differences in prices
for goods and services compared to their home country. This perceived affordability
or expensiveness is influenced not only by the nominal exchange rate—the rate at
which one currency can be exchanged for another—but also by the real exchange rate,
which takes into account differences in price levels between countries.
The real exchange rate reflects the relative purchasing power of two
currencies, adjusting for differences in inflation rates and cost of living. It is
calculated by dividing the nominal exchange rate by a price index or inflation rate
ratio between two countries. A higher real exchange rate indicates that a country's
goods and services are relatively cheaper compared to another country, while a lower
real exchange rate suggests the opposite.
For example, suppose the nominal exchange rate between the US dollar (USD)
and the Euro (EUR) is 1.20 USD/EUR. If the US price level increases faster than the
Eurozone price level, the real exchange rate might be higher than the nominal rate,
indicating that goods and services in the Eurozone are cheaper for US consumers than
the nominal exchange rate suggests.
Returning from a European vacation, travelers may find that certain items,
such as food, coffee, or local souvenirs, seemed relatively inexpensive compared to
prices at home. This perception is influenced by the real exchange rate, which affects
the purchasing power of their currency abroad. For instance, a traveler from the US
visiting Italy might find espresso relatively cheap due to a combination of favorable
nominal exchange rates and differences in price levels.
The real exchange rate plays a crucial role in international trade and
investment decisions. It affects export competitiveness, import demand, and overall
economic competitiveness of countries. A strong real exchange rate can boost a
country's export industries by making its goods cheaper for foreign consumers,
thereby stimulating economic growth and job creation. Conversely, a weak real
exchange rate can make imports more expensive, potentially leading to inflationary
pressures and affecting domestic consumption patterns.
Governments and central banks closely monitor and sometimes intervene in
currency markets to influence exchange rates and maintain stability. They may use
monetary policy tools such as interest rate adjustments or foreign exchange
interventions to manage exchange rate fluctuations and support economic objectives,
such as controlling inflation or promoting export-led growth.
For businesses engaged in international trade, understanding the real exchange
rate is crucial for pricing strategies, cost management, and risk mitigation. Companies
may hedge against currency fluctuations using financial instruments such as forward
contracts or options to protect profit margins and cash flow from adverse exchange
rate movements.
In conclusion, the real exchange rate provides a more accurate measure of
purchasing power between currencies than the nominal exchange rate alone. It reflects
differences in price levels and inflation rates between countries, influencing consumer
perceptions of affordability and affecting economic outcomes globally. For travelers
returning from vacations abroad, the real exchange rate helps explain why certain
items may have seemed more or less expensive than expected based on nominal
exchange rates, enriching their understanding of global economic dynamics and
currency relationships.
There is a simple relationship between the real exchange rate and the nominal
exchange rate, which we can infer from our espresso calculation. To compute the
realEexchange rate, we took the euro price of an espresso in Italy and multiplied it by
the nominal exchange rate, the number of dollars per euro. Then we divided it into the
dollar price of a cup of espresso in the United States. At these prices and exchange
rate, one cup of Starbucks espresso buys 2.0 cups of Italian espresso. Note in equation
(1) that the units of measurement cancel out. In the denominator, we multiplied the
price in euros times the nominal exchange rate (measured as dollars per euro) to get
an amount stated in dollars. Then we divided that number into the numerator, also
expressed in dollars. The real exchange rate has no units of measurement.
In summary, to figure out the real coffee exchange rate in equation (1), we
divided the dollar price of coffee in the United States by the dollar price of coffee in
Italy. We can use the same procedure to compute the real exchange rate more broadly
by comparing the prices of a set of goods and services that are commonly purchased
in any country. If we can transform a basket of goods and services produced in the
United States into more than one basket produced in Europe, as in the coffee example,
then we are likely to return from a trip to Paris, Rome, and Athens thinking that the
cost of living there is relatively cheap. Using this idea, we can write the real exchange
rate as Real exchange rate = Dollar price of domestic goods _____ Dollar price of
foreign goods (2) From this definition of the real exchange rate, we can see that
whenever the ratio in equation (2) is more than one, foreign products will seem cheap.
The real exchange rate, then, is much more important than the nominal exchange rate.
It is the rate that measures the relative price of goods and services across countries,
telling us where things are cheap and where they are expensive. The real exchange
rate is the guiding force behind international transactions. When foreign goods are
less expensive than domestic goods, their prices create an incentive for people to buy
imports. Competing with foreign imports becomes more difficult for local producers.
Think about what would happen if you could ship cups of espresso to the United
States from Italy and sell them in an import shop. Starbucks would lose business.
Obviously, you can’t do that with freshly brewed coffee, but you can do it with
clothing, electronics, cars, airplanes, and a wide variety of other goods and services.
The competitiveness of U.S. exports in global markets is significantly
impacted by fluctuations in the real exchange rate, which reflects the relative
purchasing power of the U.S. dollar (USD) compared to other currencies.
Understanding these dynamics is crucial for policymakers, businesses, and investors
navigating the complexities of international trade and economic policy.
The real exchange rate, adjusted for differences in inflation rates between
countries, plays a pivotal role in determining the cost competitiveness of U.S. exports.
When the real exchange rate appreciates, it means that the USD's purchasing power
has strengthened relative to other currencies. This appreciation makes U.S. goods and
services more expensive for foreign buyers, as their currencies buy fewer dollars. As a
result, U.S. exports become less competitive in international markets, potentially
leading to reduced export volumes and revenue for American businesses.
Conversely, a depreciation of the real exchange rate implies a weakening of
the USD's purchasing power relative to other currencies. This depreciation can make
U.S. exports appear cheaper to foreign buyers, as their currencies can now buy more
dollars. Lower export prices can stimulate demand for U.S. goods and services
abroad, boosting export volumes and enhancing the competitiveness of American
businesses in global markets.
The impact of the real exchange rate on export competitiveness extends
beyond pricing dynamics. It also influences trade balances, economic growth, and
employment trends. A stronger real exchange rate, for example, may lead to trade
deficits as imports become relatively cheaper for U.S. consumers, while a weaker real
exchange rate can help reduce trade imbalances by making exports more attractive.
Policymakers often monitor and respond to changes in the real exchange rate
to support economic objectives such as promoting export-led growth, maintaining
price stability, and achieving balanced trade. Central banks may adjust monetary
policies, including interest rates, to influence exchange rate movements and support
export competitiveness. Governments may also implement fiscal policies, such as
trade agreements or export incentives, to enhance the attractiveness of U.S. exports in
global markets.
For businesses engaged in international trade, managing currency risk
associated with real exchange rate fluctuations is essential. Companies may use
hedging strategies, such as forward contracts or options, to mitigate potential losses
from adverse exchange rate movements and protect profit margins. Strategic pricing
decisions, market diversification, and supply chain management are also critical in
navigating the competitive implications of real exchange rate changes.
In conclusion, the competitiveness of U.S. exports is intricately linked to
movements in the real exchange rate, which affects the cost and attractiveness of
American goods and services in international markets. Appreciation of the real
exchange rate can diminish export competitiveness by making U.S. exports more
expensive abroad, while depreciation can enhance competitiveness by lowering export
prices. Understanding and managing the impact of real exchange rate fluctuations is
essential for fostering sustainable economic growth, supporting job creation, and
maintaining a balanced trade position in the global economy.
The volume of foreign exchange transactions is enormous. On an average day
in April, 2019, $6.6 trillion in foreign currency was traded in a market that operates
24Ehours every business day.1 Given 260 business days in a normal year, the annual
volume of foreign exchange transactions is about $1,715 trillion. To get a sense of
how huge this number is, compare it to world output and trade. The World Bank
estimates that in 2018, world GDP (at market prices) was $86 trillion, and
international trade transactions (measured as exports plus imports) accounted for
about $50 trillion of that amount.
The volume of foreign exchange transactions represents a staggering
magnitude in the global financial system, far surpassing the value of world GDP and
international trade. These transactions play a crucial role in facilitating international
commerce, investment flows, and currency hedging strategies for businesses and
investors worldwide.
As of recent estimates, the daily turnover in the global foreign exchange
market averages around $6.6 trillion. To put this into perspective, this figure is
approximately 20 times the size of the world's annual Gross Domestic Product (GDP).
Such immense turnover underscores the significance of foreign exchange markets in
supporting cross-border economic activities and financial transactions on a massive
scale.
Moreover, the daily trading volume in foreign exchange markets is
approximately 34 times the value of world trade in goods and services. While global
trade plays a vital role in driving economic growth and prosperity, the sheer volume
of currency transactions eclipses these trade flows by a substantial margin. This
disparity highlights the pivotal role of currencies as a medium of exchange, unit of
account, and store of value in the global economy.
Several factors contribute to the vast scale of foreign exchange transactions.
Firstly, the globalization of trade and investment has spurred increased cross-border
transactions, necessitating the exchange of currencies to settle international payments
and investments. Multinational corporations, financial institutions, governments, and
individual investors all participate in foreign exchange markets to manage currency
risk, speculate on exchange rate movements, or facilitate global business operations.
Technological advancements have also revolutionized foreign exchange
trading, making it more accessible, efficient, and interconnected. Electronic trading
platforms, algorithmic trading systems, and high-frequency trading have significantly
enhanced market liquidity and transparency, enabling participants to execute
transactions swiftly and at competitive prices across different time zones.
Central banks and monetary authorities play a critical role in foreign exchange
markets by implementing monetary policies, intervening to stabilize exchange rates,
or managing foreign exchange reserves. Their actions can influence market sentiment,
exchange rate movements, and overall financial stability, impacting global economic
conditions and investor confidence.
For businesses engaged in international trade, understanding foreign exchange
dynamics is essential for managing currency risk and optimizing financial outcomes.
Companies may employ hedging strategies, such as forward contracts, options, or
currency swaps, to protect against adverse exchange rate movements and ensure
predictable cash flows. Strategic currency management can enhance competitiveness,
mitigate financial volatility, and support long-term business growth in global markets.
In conclusion, the vast volume of foreign exchange transactions relative to
world GDP and trade underscores the pivotal role of currency markets in the global
economy. The scale and complexity of these transactions reflect the interconnected
nature of modern finance, where currencies serve as essential tools for facilitating
international trade, investment, and economic integration. Understanding the
dynamics of foreign exchange markets is crucial for policymakers, businesses, and
investors navigating the opportunities and challenges of an increasingly
interconnected global financial system.
Because of its liquidity, the U.S. dollar is one side of 88 percent of these
currency transactions.2 That means that someone who wishes to exchange Thai baht
for Japanese yen is likely to make two transactions, the first to convert the baht to
dollars and the second to convert the dollars to yen. Most likely these transactions will
take place in London, because the United Kingdom is home to 43 percent of foreign
exchange trades—more than twice the volume in New York. Other significant foreign
exchange trading takes place in Hong Kong and Singapore (each more than 7
percent).
b. Exchange Rates in the Long Run
How are exchange rates determined? To answer this question, we will divide
our discussion into two parts. This section will look at the determination of the long-
run exchange rate and the forces that drive its movement over long periods, such as
decades. The next section will consider what causes exchange rates to vary over the
short term—a few days or months, or even years.
The starting point for understanding how long-run exchange rates are
determined is the law of one price. The law of one price is based on the concept of
arbitrage—the idea that identical products should sell for the same price. Recall from
that two financial instruments with the same risk and promised future payments will
sell for the same price. We might refer to this phenomenon as financial arbitrage. If
we extend the concept of arbitrage from financial instruments to goods and services,
we can conclude that identical goods and services should sell for the same price
regardless of where they are sold. Identical televisions or cars should cost the same
whether they are sold in St. Louis or Philadelphia. When they don’t, someone can
make a profit.
For instance, if a specific model television were cheaper in St. Louis than in
Philadelphia, someone could buy it in St. Louis, drive to Philadelphia, and sell it at a
profit. This opportunity to profit from arbitrage would increase demand for televisions
in St. Louis, where the price is low, and increase the supply of televisions in
Philadelphia, where the price is high. Higher demand drives prices up, while a larger
supply forces them down. The process will continue until the television sells for the
same price in both cities. Of course, complete price equalization occurs only in the
absence of transportation costs. If it costs $10 to transport the television 900 miles
from the Mississippi River to the East Coast, then arbitrage will continue until the
price in St. Louis is within $10 of the price in Philadelphia. We can extend the law of
one price from cities in the same country to cities in different countries. Instead of St.
Louis and Philadelphia, think of Detroit, Michigan, and Windsor, Ontario—two cities
separated by the Detroit River and the Canadian border. The river can be crossed by
bridge or tunnel in roughly one minute. Ignoring transportation costs, then, once we
have converted a price from U.S. to Canadian dollars, the cost of a television should
be the same in both cities. If a TV costs $500Ein the United States, at a nominal
exchange rate of 1.36 Canadian dollars per U.S.E dollar, the Canadian price should be
(500 × 1.36) = 680 Canadian dollars.
Returning to the law of one price, we can see immediately that it fails almost
all the time. The fact is that the same commodity or service sells for vastly different
prices in different countries. Why? Transportation costs can be significant, especially
for heavy items like marble or slate. Tariffs—the taxes countries charge at their
borders—are high sometimes, especially if a country is trying to protect a domestic
industry. And technical specifications can differ. A television bought in Paris will not
work in St.ELouis because it requires a different input signal. A car sold in Great
Britain cannot be used in the United States or continental Europe because its steering
wheel is on the right. Moreover, tastes differ across countries, leading to different
pricing. Finally, some things simply cannot be traded. A haircut may be cheaper in
New Delhi than in Philadelphia, but most Americans simply can’t take advantage of
that price difference.
Since the law of one price fails so often, why do we bother with it? Because
even with its obvious flaws, the law of one price is extremely useful in explaining the
behavior of exchange rates over long periods, like 10 or 20 years. To see why, we
need to extend the law from a single commodity to a basket of goods and services.
The result is the theory of purchasing power parity (PPP), which means that one unit
of U.S. domestic currency will buy the same basket of goods and services anywhere
in the world. This idea may sound absurd, but let’s look at its implications. According
to the theory of purchasing power parity, the dollar price of a basket of goods and
services in the United States should be the same as the dollar price of a basket of
goods and services in Mexico, Japan, or the United Kingdom.
That is, purchasing power parity implies that when prices change in one
country but not in another, the exchange rate should change as well. When prices rise
within a country, the effect is called inflation. If inflation occurs in one country but
not in another, the change in prices creates an international inflation differential. So
purchasing power parity tells us that changes in exchange rates are tied to differences
in inflation from one country to another. Specifically, the currency of a country with
high inflation will depreciate. To see this point, think about what would happen if
there were no inflation in the United Kingdom, but prices in the United States
doubled. We would not expect the dollar–pound exchange rate to stay the same.
Instead, we would predict that one dollar would now buy half as many British pounds
as it did before (that is, twice as many dollars would be needed to purchase one
pound).3 There is strong evidence to support this conclusion, but the data must be
drawn over fairly long periods, and the relationship is not perfect.
Take, for instance, the U.S. dollar–British pound exchange rate plotted. Recall
that in 1973, one pound was worth around $2.50. By early 2019, a pound was worth
$1.28—a decline of 49 percent, or a bit more than 1.4 percent per year for 46 years.
Over the same period, U.S. prices increased an average of 3.86 percent per year, while
British prices increased an average of 5.08 percent per year—a difference of 1.2
percent per year. So, the relationship between the inflation and exchange rates
explains most of the trend in the dollar–pound exchange rate over the 46-year period.
What is true for the United Kingdom is true for the rest of the world. To confirm it,
we can look at a plot of (a) the historical difference between inflation in other
countries and inflation in the United States against (b) the percentage change in the
number of units of other countries’ currencies required to purchase one dollar—that
is, the average annual depreciation of the exchange rate.
Each point represents a country. The difference between its average annual
inflation and that of the U.S. is on the horizontal axis, and the average annual
percentage change in the exchange rate between the country’s currency and the U.S.
dollar is on the vertical axis. Points further to the right represent countries with higher
levels of inflation, and points higher up are countries whose dollar exchange rate
experienced more depreciation over the 30-year period of the sample. The solid line is
a 45-degree line that is consistent with the theoretical prediction of purchasing power
parity. On the 45-degree line, exchange rate movements exactly equal differences in
inflation. Granted, the points don’t all lie exactly on the line, but the pattern is clearly
there. The higher a country’s inflation, the greater the depreciation in its exchange
rate.
Take the example of Bolivia. From 1980 to 2010, Bolivia’s inflation minus
U.S. inflation averaged 40 percent per year, and the Bolivian currency (originally the
bolivar, now the boliviano) depreciated at an average annual rate of 42 percent.
Putting that into perspective, the 2010 Bolivian price level was more than 465,000
times the 1980 Bolivian price level, and the exchange rate depreciated by an
enormous multiple. That means purchasing one dollar in the foreign exchange market
required 286,000 times as many bolivianos in 2010 as in 1980 that there are no
countries with high inflation differentials and small exchange rate changes or big
exchange rate changes and low inflation differentials. All of the points lie close to the
45-degree line.
Even if we look at an interval as short as a decade, the connection between
movements in the exchange rate and differences in inflation across countries usually
holds up to scrutiny. But the same exercise applied to periods of a few weeks, months,
or even years would be a total failure. We know that from examining the plots of the
Korean won–U.S. and the dollar–euro exchange rate. Recall that the Korean won
went through a sudden, steep depreciation, falling from 900 to 1,900 won to the dollar
in just a few months, at the end of 1997. The pattern of Korean inflation at the time, a
relatively steady 7½ percent versus 1½ percent in the United States, simply cannot
explain this sudden change. Similarly, from the euro’s inception in January 1999, the
dollar–euro rate fell steadily for two years, dropping more than 25 percent. At the
same time, inflation in the euro area ran a full percentage point below U.S. inflation.
Examples like these are the norm, not the exception. Over weeks, months, and even
years, nominal exchange rates can deviate substantially from the levels implied by
purchasing power parity. So, while the theory can help us understand long swings in
exchange rates, it provides no explanation for the short-term movements we see all
the time.
Fortunately, we do have some equipment in our tool kit that we can use to
explain short-term movements in exchange rates. Before continuing, we should note
the meaning of two additional terms. We often hear currencies described as
undervalued or overvalued. When people use these terms, they often have in mind a
current market rate that deviates from what they consider to be purchasing power
parity. For example, a person who thinks that one dollar should purchase one euro—
that is, that one to one is somehow the “correct” long-run exchange rate—would say
that if one dollar purchases only €0.90, it is undervalued relative to the euro, or the
euro is overvalued relative to the dollar.
c. Exchange Rates in the Short Run
While purchasing power parity helps us understand movements in nominal
exchange rates over decades, it cannot explain the weekly, monthly, or even yearly
movements we see. What can? What sorts of phenomena are responsible for the
nearly constant movement in exchange rates? To explain short-run changes in nominal
exchange rates, we turn to an analysis of the supply of and demand for currencies.
Because, in the short run, prices don’t move much, these nominal exchange rate
movements represent changes in the real exchange rate. That is, a 1 or 2 percent
change in the nominal dollar–euro exchange rate over a day or week creates a roughly
equivalent change in the real dollar–euro exchange rate.
As is always the case in discussing foreign exchange, we need to pick a home
country and stick to it. The most natural choice for us is the United States, so we’ll
use the U.S. dollar as the domestic currency. Consistent with this, we will discuss the
number of units of foreign currency that it takes to purchase one dollar. For example,
we will talk about the number of euros per dollar. Who supplies dollars to the foreign
exchange markets? People who have them, of course—primarily people in the United
States. There are two reasons why someone who is holding dollars would want to
exchange them for euros or yen: (1)Eto purchase goods and services produced abroad,
like a Japanese television set, dinner in Paris, or tuition at a foreign university; and (2)
to invest in foreign assets, such as bonds issued by the German telecommunications
company Deutsche Telekom, or shares in Honda, the Japanese manufacturer of cars
and motorcycles.
To see why, suppose you are planning to buy a car. You have narrowed your
options to a German-made Volkswagen Jetta and an American-made Ford Focus.
Price is important to you. Because the Volkswagen is manufactured abroad, a change
in the value of the dollar will affect your decision. As the dollar increases in value, the
price of the Jetta falls and you become more likely to buy the Jetta. If you do, you will
be supplying dollars to the foreign exchange market. What is true for your car
purchase is true for everything else. The more valuable the dollar, the cheaper foreign
goods, services, and assets will be and the higher the supply of dollars in the dollar–
euro market.
Foreigners who want to purchase American-made goods, assets, or services
need dollars to do so. Suppose a European student would like to attend college in the
United States. The school will accept payment only in dollars, so paying the tuition
bill means exchanging euros for dollars. The lower the dollar–euro exchange rate—
the fewer euros needed to buy one dollar—the cheaper the tuition bill will be from the
viewpoint of a European student. At a given dollar price, the fewer euros needed to
purchase one dollar, the cheaper are American-made goods and services. And the
cheaper a good or service, the higher the demand for it.
The exchange rate between currencies, such as the dollar (USD) and the euro
(EUR), plays a crucial role in shaping investment decisions and the global demand for
currencies. Understanding this relationship is essential for investors, businesses, and
policymakers navigating the complexities of international finance and economic
policy.
When the dollar depreciates relative to other currencies—meaning it becomes
cheaper compared to, for example, the euro—U.S. investments often become more
attractive to foreign investors. This attractiveness stems from the fact that foreign
investors can purchase more U.S. assets, such as stocks, bonds, or real estate, for the
same amount of their own currency. As a result, there is typically an increase in
demand for dollars as investors exchange their currencies to acquire U.S. investments.
Conversely, when the dollar appreciates—strengthening against other
currencies—U.S. investments may become relatively less attractive to foreign
investors. The higher cost in foreign currency terms reduces the purchasing power of
foreign investors looking to acquire U.S. assets, potentially dampening demand for
dollars in the foreign exchange market.
The relationship between exchange rates and investment attractiveness is
influenced by several factors. Firstly, interest rate differentials between countries can
affect the relative returns on investment, influencing capital flows and exchange rate
movements. Higher interest rates in the U.S., for instance, may attract foreign capital
seeking higher yields, contributing to dollar appreciation.
Political and economic stability, as well as macroeconomic fundamentals such
as inflation rates and growth prospects, also play significant roles in shaping investor
sentiment and exchange rate dynamics. Perceived risks or uncertainties in one country
relative to another can impact investor confidence and influence demand for assets
denominated in different currencies.
The demand curve for dollars in the foreign exchange market typically slopes
downward, reflecting the inverse relationship between the exchange rate and the
quantity of dollars demanded by foreign investors. As the dollar becomes cheaper
(weakening), foreign investors find U.S. investments more attractive and demand
more dollars to purchase these assets. Conversely, a stronger dollar reduces the
attractiveness of U.S. investments in foreign currency terms, leading to lower demand
for dollars.
Central banks and monetary authorities closely monitor exchange rate
movements and investor sentiment to manage currency stability and economic
objectives. Interventions in foreign exchange markets, adjustments in interest rates,
and macroeconomic policies can influence exchange rate dynamics and impact
investment flows.
The equilibrium exchange rate, equates the supply of and demand for dollars.
Because the values of all the major currencies of the world (including the dollar, the
euro, the yen, and the pound) float freely, they are determined by market forces. As a
result, fluctuations in their value are the consequence of shifts in supply or demand.
Shifts in either the supply of or the demand for dollars will change the equilibrium
exchange rate. Let’s begin with shifts in the supply of dollars. Remember that
Americans wanting to purchase products from abroad or to buy foreign assets will
supply dollars to the foreign exchange market. Anything that increases their desire to
import goods and services from abroad, or their preference for foreign stocks and
bonds, will increase the supply of dollars, leading to a depreciation of the dollar. What
causes Americans’ preferences for foreign goods, services, and assets to increase,
prompting them to supply more dollars to the foreign exchange market, shifting the
supply of dollars to the right? This question has many answers.
To understand shifts in the demand for dollars, all we need to do is review the
list just presented, this time from the point of view of a foreigner. Anything that
increases the desire of foreigners to buy American-made goods and services, or to
invest in U.S. assets, will increase the demand for dollars and shift the demand curve
to the right. Increases in demand come about when foreigners prefer more American-
made goods, when the real yield on U.S. bonds rises (relative to the yield on foreign
bonds), when foreign wealth increases, when the riskiness of American investments
falls, and when the dollar is expected to appreciate.
When events occur that increase demand, such as heightened economic
growth, favorable trade balances, or increased foreign investment inflows, they
collectively exert upward pressure on the demand for a country's currency. This surge
in demand shifts the demand curve for the currency to the right within the foreign
exchange market. Consequently, as demand increases relative to supply, the value of
the currency appreciates against other currencies. This appreciation can have several
implications: it makes imports cheaper, potentially reducing inflationary pressures; it
can improve the purchasing power of consumers and businesses importing goods or
services; and it may make foreign travel and investments more expensive for domestic
residents. Additionally, a stronger currency can affect trade competitiveness by
making exports relatively more expensive for foreign buyers, potentially impacting
export-driven industries. Overall, these dynamics illustrate how changes in demand
can influence currency valuation, affecting both domestic and international economic
conditions.
The supply and demand model of the determination of exchange rates helps
explain short-run movements in currency values. Let’s return to the 30 percent
appreciation of the dollar relative to the euro that occurred between January 1999 and
October 2000. Over this period, the number of euros required to purchase one dollar
increased. Our model allows us to conclude that the cause was either a decrease in the
dollars supplied by Americans or an increase in the dollars demanded by foreigners.
When factors cause a decrease in the supply of a currency, such as reduced
exports, capital outflows, or lower foreign investment inflows, the supply curve in the
foreign exchange market shifts to the left. This reduction in supply relative to demand
increases the equilibrium exchange rate, making the currency more valuable. It can
also lead to a depreciation of the currency of the country experiencing the supply
shock. For instance, if a country's exports decline due to external economic
slowdowns or trade restrictions, the supply of its currency in the global market
decreases, leading to an appreciation of the currency.
Additionally, factors such as changes in government policies affecting capital
flows, interventions by central banks to stabilize the currency, or shifts in investor
sentiment towards a particular currency can also influence the supply curve. These
dynamics highlight the interconnectedness of economic policies and external factors
in shaping exchange rate movements.
Conversely, an increase in demand for a currency, driven by factors such as
higher interest rates, strong economic growth prospects, or increased foreign
investment in domestic assets, shifts the demand curve to the right. This heightened
demand relative to supply increases the equilibrium exchange rate, making the
currency more valuable in the foreign exchange market. It reflects stronger market
confidence in the country's economic outlook and can attract capital inflows seeking
higher returns or perceived stability.
Factors influencing demand include changes in economic indicators like GDP
growth, inflation rates, and employment levels, as well as geopolitical developments
impacting global risk sentiment. Moreover, shifts in international trade patterns, such
as changes in trade agreements or tariffs, can also influence currency demand by
altering expectations about future economic conditions and trade competitiveness.
To accurately assess the impact of these shifts on exchange rates, economists
and analysts typically consider a range of indicators and evidence. This includes
examining trade balances, capital flows, interest rate differentials, inflation
differentials, and broader macroeconomic policies implemented by central banks and
governments. Market participants and policymakers monitor these factors closely to
gauge the potential direction and sustainability of exchange rate movements over
time.
Understanding the complex interplay between supply and demand dynamics in
the foreign exchange market underscores the importance of comprehensive analysis
and empirical evidence in evaluating currency valuation and its implications for
economic stability and international trade relations.
Looking at the statistics on the supply of dollars, we see that the U.S. current
account deficit—exports minus imports—increased from $200 billion at the end of
1998 to $450 billion by the close of 2000. That is, Americans increased their net
purchases of foreign goods during this period, raising the supply of dollars, shifting
the supply curve to the right. But at the same time, investment funds were pouring
into the United States from abroad. Fall 1998 was a time of financial stress, and
during times of crisis, investors tend to shift into the safest place, which they view as
the United States. Moreover, 1999 was the peak of the U.S. stock market bubble.
Foreign capital streamed toward the dot-com companies, especially those on the
Nasdaq. As a result, foreigners’ demand for dollars skyrocketed, outstripping the
increased supply of dollars and driving up the “price”—the exchange rate. That is,
theEdemand for dollars shifted to the right by more than the supply for dollars did.
In the long run, sustained appreciation of a currency due to increased demand
can lead to adjustments in the foreign exchange market. While initial demand shocks
can cause rapid appreciation, various factors come into play over time that can
influence the sustainability of this trend. Central to these considerations is the concept
of purchasing power parity (PPP), which posits that in the absence of trade barriers
and transaction costs, exchange rates should adjust to equalize the price levels of
identical goods and services in different countries.
Over an extended period, if a currency appreciates beyond what is justified by
economic fundamentals, such as productivity growth, inflation differentials, and trade
balances, it may become overvalued in relation to its PPP equilibrium. This
overvaluation can erode the competitiveness of a country's exports, potentially leading
to trade imbalances and adjustments in the exchange rate.
Moreover, the sustainability of currency appreciation also hinges on factors
such as monetary policy actions by central banks, geopolitical developments, and
market sentiment. Central banks may intervene in currency markets to moderate
excessive appreciation or depreciation, aiming to stabilize economic conditions and
maintain competitiveness in global markets.
Ultimately, market forces tend to align exchange rates with underlying
economic fundamentals in the long run, reflecting adjustments in relative prices and
economic conditions across countries. Thus, after a period of sustained appreciation,
the currency may gradually depreciate to levels more consistent with its purchasing
power parity equilibrium, as market participants recalibrate their expectations and
economic factors rebalance over time. This process underscores the dynamic nature of
exchange rate movements and the role of economic fundamentals in shaping long-
term currency valuation.
d. Government Policy and Foreign Exchange Intervention
The more a country relies on exports and imports, the more important its
exchange rate. Currency appreciation drives up the price foreigners pay for a
country’s exports as it reduces the price residents of the country pay for imports. This
shift in foreign versus domestic prices hurts domestic businesses. Companies with big
export businesses suffer the most, along with businesses whose products compete
with imported goods. They often respond by pressuring elected officials to reduce the
value of the currency. After all, government policymakers may influence the prices of
lots of goods and services. Milk, rent, and electric power are just a few possibilities.
Why not exchange rates too? Government officials can intervene in foreign exchange
markets in several ways. Some countries adopt a fixed exchange rate and act to
maintain it at a level of their choosing.
Exchange rates can be influenced through a variety of policy measures
available to policymakers. Central banks, for instance, often use monetary policy tools
such as interest rate adjustments to affect exchange rates. By increasing or decreasing
interest rates, central banks can influence capital flows and investor sentiment towards
a currency, thereby impacting its exchange rate relative to other currencies.
In addition to interest rates, governments can also intervene directly in foreign
exchange markets through buying or selling their own currency. This intervention can
help stabilize exchange rates during periods of volatility or align them with desired
economic objectives. Moreover, fiscal policy measures, such as government spending
and taxation policies, can indirectly affect exchange rates by influencing economic
growth and investor confidence.
Furthermore, external factors such as trade balances, geopolitical events, and
global economic trends also play crucial roles in determining exchange rates.
Policymakers must consider these external factors alongside domestic policy options
when formulating strategies to manage exchange rates effectively.
Overall, while exchange rates are influenced by a complex interplay of factors,
policymakers can indeed exert significant control over them through strategic use of
policy tools and interventions, provided they have the necessary resources and are
willing to take decisive actions when needed.
Large industrialized countries and common currency zones like the United
States, Europe, and Japan generally allow currency markets to determine their
exchange rate. Even so, there are occasions when officials in these countries try to
influence the currency values. Sometimes they make public statements in the hope of
influencing currency traders. But talk is cheap, and such statements rarely have an
impact on their own. At other times, policymakers will buy or sell currency in an
attempt to affect demand or supply. This approach is called foreign exchange
intervention. Some countries hardly ever attempt to influence their exchange rates in
this way, while others intervene in the markets frequently. Over the past two decades
to 2019, the United States intervened only twice; both times it was pressured to do so
by its allies.
Among major industrialized countries, Japan stands out as one of the most
active participants in foreign exchange markets. The spring of 2002 marked a
significant period that exemplifies Japan's approach to foreign exchange policies and
interventions.
Japan's involvement in foreign exchange markets is driven by several key
factors. Firstly, the yen, Japan's currency, plays a crucial role in global trade and
finance due to Japan's position as a major exporter and importer of goods and
services. As a result, fluctuations in the yen's exchange rate can have profound
implications for Japan's economy, including its export competitiveness, inflationary
pressures, and overall economic stability.
During the spring of 2002, Japan's approach to foreign exchange markets
likely revolved around its strategic objectives to maintain stability and
competitiveness in its currency. Japanese authorities, particularly the Ministry of
Finance and the Bank of Japan, have historically employed a mix of monetary policy
tools and direct interventions to influence the yen's exchange rate. These interventions
can involve buying or selling yen in the foreign exchange market to counteract
excessive volatility or to achieve specific policy objectives, such as supporting export-
driven growth or managing inflationary pressures.
Moreover, Japan's participation in foreign exchange markets is influenced by
its economic policies and global economic conditions. In 2002, Japan was navigating
challenges such as a slow recovery from the Asian financial crisis of the late 1990s
and grappling with deflationary pressures domestically. These factors likely informed
Japan's cautious yet proactive approach to managing its exchange rate during that
period.
Additionally, Japan's role in foreign exchange markets extends beyond
domestic economic considerations. As a key player in global financial markets, Japan
collaborates with other major economies and international institutions to address
broader economic issues, including exchange rate stability and financial market
resilience.
In summary, the spring of 2002 provides a snapshot of Japan's active
participation and strategic approach in foreign exchange markets. By leveraging its
economic policies, interventions, and international collaborations, Japan aims to
navigate currency fluctuations effectively while supporting its economic objectives
and contributing to global financial stability.
In the latter half of the 1990s, the Japanese economy was stagnant; real GDP
grew at a rate of about 1 percent. In 2001, the economic situation worsened and
output fell 2 percent. After trying almost every other approach imaginable to
resuscitate the economy, Japanese officials decided to see if depreciating the yen
would help. The idea was to help Japanese exporters increase their foreign sales by
reducing the prices foreigners paid for Japanese products. In late May 2002, Japan’s
Ministry of Finance sold yen in exchange for dollars, hoping to drive down the price
by increasing the supply of yen.
In the spring of 2002, Japan's intervention in the foreign exchange markets
aimed to influence the value of the yen, yet the outcome was a modest depreciation
followed by a return to a higher valuation by the end of the month. This sequence
highlights several complexities and considerations in foreign exchange interventions
and their impacts on currency dynamics.
Japan's intervention strategy typically involves the Ministry of Finance and the
Bank of Japan working in tandem to stabilize the yen's exchange rate against major
currencies like the US dollar and the euro. Interventions often take the form of selling
yen to dampen its appreciation or buying yen to prevent excessive depreciation,
depending on economic conditions and policy objectives at the time.
Despite the initial modest depreciation of the yen in response to intervention
efforts during the spring of 2002, the currency's value rebounded and even surpassed
its pre-intervention levels by the end of the month. This outcome underscores the
challenges inherent in foreign exchange interventions, as market forces and investor
sentiment can sometimes outweigh short-term policy actions.
Several factors may have contributed to the yen's resilience and subsequent
appreciation. Firstly, market participants' reactions to intervention actions can vary,
influenced by perceptions of economic fundamentals, global market trends, and
geopolitical developments. In some cases, interventions may serve as signals of a
government's commitment to certain exchange rate levels, influencing market
expectations and behavior.
Moreover, the effectiveness of interventions depends on the scale, timing, and
persistence of government actions relative to market dynamics. In the case of Japan in
2002, while the initial depreciation was observed, subsequent market forces may have
reversed the short-term impact, highlighting the limits of intervention in influencing
long-term exchange rate trends.
Furthermore, the broader economic context during that period, including
global economic growth prospects, interest rate differentials, and trade dynamics, also
shaped the yen's exchange rate movements. Japan's economic recovery efforts post-
Asian financial crisis and its policy responses to domestic challenges like deflation
likely influenced market perceptions of the yen's value over time.
In conclusion, the spring of 2002 serves as a case study of Japan's efforts in
foreign exchange interventions and the nuanced outcomes that can arise. While
interventions may initially affect currency values, market forces and economic
fundamentals ultimately play pivotal roles in determining long-term exchange rate
trends. Japan's experience underscores the importance of comprehensive economic
policies and coordinated international efforts in managing currency stability amidst
global economic dynamics.
Why did the Japanese government’s policy fail? Shouldn’t an increase in the
supply of yen, regardless of where it comes from, lead to a depreciation? The primary
reason the intervention didn’t work was that, while the Japanese Ministry of Finance
was selling yen, the Bank of Japan was buying them but here is a quick version of the
story. The Bank of Japan is in charge of monetary policy in Japan, which means
controlling a particular short-term interest rate. Operationally, the result was that,
within a few days, the Bank of Japan reversed the Ministry’s foreign exchange
intervention. If it hadn’t, the interest rate it wished to control would have changed.
Thus, foreign exchange interventions will be ineffective unless they are accompanied
by a change in the policy interest rate.
In conclusion, while occasional intervention in foreign exchange markets may
occur under exceptional circumstances or in coordination with other countries, the
United States and similar major economies generally maintain a cautious approach to
intervention. This approach reflects a commitment to market principles, policy
credibility, global economic stability, and achieving domestic economic goals through
a range of policy tools and frameworks.
