The correct answer is C) The Nationalist Party and the Communist Party formerly were aligned.
What was most surprising about the outbreak of the Chinese Civil War was that the Nationalist Party and the Communist Party formerly were aligned.
Both, the Chinese Civil War was that the Nationalist Party and the Communist Party formerly were aligned before the political divisions that generated the civil war. In 1911, when the Qing Dynasty ended, a void of political power affected China. That is when the parties formed, the nationalist Kuomintang Party and the Communist Party. Both parties were united for a time because originally, they wanted to unify China with support from Russia. But despite being united, internal differences and political rivalries made them take separate ways.