Since the recession of the year 1930 it results in the threat of total collapse of large. Financial institutions bailout bank by the national government and fall in the stock market all over the world. In many areas, the housing market still succeeded in repelling, mortgage foreclosure and unemployment for a long time. The crisis that plays the most important role in the failure of the most important business decline in consumer wealth estimated in millions of million US dollars, and the slowdown of economic activity that leads to the global recession. 2008-2012 and contributing to the government debt crisis in Europe. The use of the crisis is manifested as a liquidity crisis that can be dated from the 9 August 2007 when BNP. Paribas cancel withdrawal from three hedge funds claim. "a complete evaporation of liquidity ".