Final answer:
The Nationalists were pushed to the island of Taiwan after losing the Chinese civil war to the Communist army led by Mao Zedong.
Step-by-step explanation:
After the Chinese civil war, the Nationalists were pushed to the island of Taiwan. Mao Zedong's Communist forces emerged victorious over the Nationalists led by Chiang Kai-Shek. Taiwan, also known as Formosa, had been relinquished to China after being a part of the Japanese Empire for fifty years.