Original sentence: The Chinese Civil War (1927–1950) was (or some argue, is, 1927-present) a civil war fought between the Kuomintang (KMT)-led Nationalist Government of the Republic of China, and the Communist Party of China (CPC), for the control of each others' territory which eventually led to two de facto states, the Republic of China (ROC) in Taiwan and the People's Republic of China (PRC) in mainland China both claiming to be the legitimate government of China
Edited sentence: The Chinese Civil War (1927–1950) was (or some argue, is, 1927-present) a civil war fought between the Kuomintang (KMT)-led Nationalist Government of the Republic of China, and the Communist Party of China (CPC), for the control of each others' territory which eventually led to China's division into the Republic of China (ROC) on the island of Taiwan and the People's Republic of China (PRC) on the mainland