read then summarize, write down own thoughts and explain economic phenomena

I will collect my homework before 5 P.M today, 2/14/2016

read 5 sources then summarize, write down own thoughts and explain economic phenomena. each question should be write as one short paragraph. since, there are 5 questions in total. so, there should be 5 short paragraphs. here is the sources.(Hint: every source can be found by google schoalr)