13.1 Answer # 2, 3, 4, 5, 7 2. Business cycles can be determined by GDP. 3. Recession and Expansion. 4. Causes: enormous gap in the distribution of income, easy credit, global economic conditions, and high US tariffs. Effects: creation of Social Security Act, creation of SEC, creation of FDIC 5. When GDP declines for two consecutive quarters, it is considered a recession. Expansion is a period of recovery from a recession. Economic growth is determined by the trend line that is formed from the repeating business cycle. 7. The economy is going through expansion, a period of economic growth, since companies are receiving more demand for their products.