Original sentence: At its founding, the People's Republic of China claims it displaced the Republic of China (ROC), which had ruled China since 1912, and forced its government to flee the mainland and retreat to Taiwan, which has since been governed by the ROC
Edited sentence: At its founding, the People's Republic of China displaced the Republic of China (ROC), which had ruled China since 1912, and forced its government to flee the mainland and retreat to Taiwan, which has since been governed by the ROC