Since the World Economic Depression of 1929 in developed economies, the economic crisis did not cause a serious debt problem, especially in lessdeveloped countries, high debt and cost of debt was known as a chronic problem. However, although the sound of footsteps, the crisis erupted in 2008 and with the decline in the U.S. housing market, the so-called subprime mortgage collapse of credit markets, over-growing derivatives markets since the 2000s, and the associated impact on banks, ie, the financial system has brought to the point of bankruptcy. Have a transnational network of financial markets; crisis has led to the spread of the whole world. At this point the sovereign debt crisis in some countries, the international monetary s...