When the Japanese invaded China they did not hesitate in any way what so ever to make the lives of the Chinese as horrible as possible. The Japanese soldiers raped women and brutally killed anyone in their path for complete control of China. However, Mao defended and fought of the chinese in northern China with the support from the CCP. Chiang was supported by the US in this conflict. The americans wanted to form a coalition between the two groups but did not succeed. This led to a civil war which Mao would end up winning. Chiang would flee too what is now modern day Taiwan and form nationalist China. Mao on the other hand would form the peoples republic of China on the mainland. Without the invasion from the Japanese the Chinese never would have had this communist revolution. The thought of where china would be today is amazing with out the ideology of communism.