The correct answer is C) it weakened the Chinese, providing an opportunity for Japan to invade.
The significance of the Chinese Civil War was that it weakened the Chinese, providing an opportunity for Japan to invade.
The Chinese Civil War started in 1945 and ended in 1949. The troops of Mao Zedong defeated the Nationalist troops and Mao imposed Communism in China. On October 1, 1949, Mao proclaimed the People's Republic of China and the capital was Beijing. Nationalistic leader Chiang Kai Shek and his followers had to leave the country and went to Taiwan. China eas weakened by the war and had many economic struggles to initiate the reconstruction of the country.