The second scientific and technological revolution (65438+70s) established the world capitalist system, accumulated a large amount of capital and plundered colonies, made breakthroughs in natural science, and the emergence of the world market and the formation of the capitalist world system further expanded the demand for goods and promoted the rapid development of productive forces. 2. Further adjustment of production relations: monopolies and monopoly organizations have been formed, and major capitalist countries have entered the stage of imperialism; 3. The powers stepped up their efforts to carve up the world, and the capitalist world system was finally formed; Colonial aggression entered the leading period of capital export; The gap between the east and the west has further widened. 4. The imbalance of political and economic development has intensified and the pattern of world power has changed; Struggles and conflicts between major powers have intensified. The proletariat has grown, and the workers' movement has gradually reached its climax. 1. The great powers continued to launch a series of wars of aggression against China, setting off a frenzy to carve up China. China was completely reduced to a semi-colonial and semi-feudal society. 2. China's national capitalism has developed initially. 3. The rise of the people's national salvation movement in China (such as the Reform and Reform Movement, the Boxer Rebellion and the Revolution of 1911).