Abstract:

Abstract The history of economic crisis is as old as the history of the economy. There was risk of the economic crisis since the beginning of the economic activities. This risk realized three times on a global scale. The first of these was great depression that began 1929 and lasted until middle of the 1940s. Great depression broke out by effect of I. World War, the deregulation policy, investors and consumer behavior and It ended by effect of regulatory policies. Although OPEC crisis ended with regulation policies, It led to return to deregulation policies. Deregulation policy has been caused 2008 Global Economic Crisis and it is being combated against by regulation policy. In study, causes of and policies of the business cycle of three the crisis are discussed. Thus, to see is aimed common causes of crisis and solution methods and this was accomplished. Keywords: The Great Depression, The OPEC Crisis, The 2008 Global Crisis, Regulation, Deregulation.  

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