After the 1920s, due to various subjective and objective reasons, the European workers' movement turned into a low tide, and capitalist countries entered a relatively stable period. However, from 1929 to 1933, a global economic crisis broke out in the capitalist world, and various contradictions in the capitalist world were unprecedented. The imperialist countries have gradually formed two political and military groups, one is the American, British and French group, and the other is the German, Italian and Japanese group. Germany, Italy and Japan established a fascist dictatorship, invaded and expanded wildly abroad, and attempted to carve up the world again, which eventually led to the Second World War in the late 1930s. More than 60 countries and regions and more than 2 billion people have been involved in the war. With the development of the national liberation movement in Europe and Asia and the Soviet Union's participation in the war, the Second World War became a just war against fascism. World War II ended with 1945 defeating the fascists of Germany, Japan and Italy. The second world war greatly weakened the capitalist forces. At the same time, the world people's democratic movement continued to rise after the war, and a series of socialist countries and national independent countries appeared in Asia and Europe. 1949 The establishment of People's Republic of China (PRC) in June 10 is a major event that affects world history and international situation. Since the 1960s, no matter in the capitalist world, in the vast areas of Asia, Africa and Latin America, or in the communist movement, a series of new major changes have taken place, full of complex struggles, profound changes, fierce turmoil and new differentiation and reorganization.