Complex sentence: At the same time the First United Front between KMT and the Communist Party of China (CPC) was questioned after the Zhongshan Warship Incident in March 1926, and following events made Chiang Kai-shek in effect the paramount military leader of the KMT.
Split into simpler sentences: At the same time the First United Front between the KMT and the Communist Party of China (CPC) was questioned after the Zhongshan Warship Incident in March 1926. Subsequent events made Chiang Kai-shek the paramount military leader of the KMT.