We will review the economic reality of the economically most influential countries in the world, which are the United States, the European Union and China, since the economy of these three countries represent more than 50% of the global economy, and because of the economic crisis being closely linked to the capitalist system adopted by the United States and the European Union. Therefore they carry the driving impact on the crisis, while China’s role during the crisis was to overcome it, thus playing a reactionary role rather than a progressive one, as we will demonstrate later. For your information, the U.S. economy alone approaches the economies of China, Japan and Germany combined, the three largest economic powers in the world that come after the U.S. economy respectively. The total size of the U.S. economy in the year 2012 amounted to $15.7 trillion, which represents 22% of the global economy. The Chinese economy reached $8.2 trillion, while the Japanese and the German economy have reached the $5.9 trillion and $3.4 trillion respectively according to the World Bank and the Organization for Economic Cooperation and Development. Because of the large size of the U.S. economy, America's economic crisis that resulted from the collapse of the mortgage market in America spread to the world.