1000 words essay

During the last third of the course, we have studied the Business Cycle. Please using the readings of Knoop and Lightner please explain the following:

1. The Business Cycle: definition, problems, reasons, facts
2. Explain the four phases of the business cycle
3. What is the difference between recession and depression
4. How or what are the causes

You can only use the materials from the books that I provide to answer the questions. No other resources like Google. You can directly cited the words from the books, but please leave the page number after your citation so I can find where you cited. Thanks :)