How did china’s revolution begin

The Chinese Communist Revolution, led by the Communist Party of China and Chairman Mao Zedong, resulted in the proclamation of the People's Republic of China, on 1 October 1949. The revolution began in 1946 after the Second Sino-Japanese War (1937–1945) and was the second part of the Chinese Civil War (1945–49).

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b) the planets year length would be longer

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