Modern Economic Theories- Two controversial economic policies are Keynesian economics and Supply Side economics. They represent opposite sides of the economic policy spectrum and were introduced at opposite ends of the 20th century, yet still are the most famous for their effects on the economy of the United States when they were used. The founder of Keynesian economic theory was John Maynard Keynes. He made many great accomplishments during his time and probably his greatest …showed first 75 words of 502 total…

…showed last 75 words of 502 total…aftermath of the Great Depression, a catastrophe America will never forget and will never be able to repay Keynes for the economic assistance in recovering from it. The Supply Side theory was used after a long period of prosperity, and although seeming to continue the practices of the past administration, was the cause of a fearful recession. The success of those or any economic theory is based on the time at which it is implemented.