Answer:
In the Chinese Civil War, the United States backed the Kuomintang.
Step-by-step explanation:
The Chinese Civil War lasted from April 1927 to May 1950, and was a war between Kuomintang (the Nationalist Party of China) and the Communist Party of China. The war began after the Northern Expedition, when the right wing of Kuomintang, led by General Chiang Kai-shek, purged from the party both Communists and Kuomintang's left wing from the alliance between Kuomintang and the Communist Party. The war represented an ideological split between the western-backed Kuomintang nationalists and the Soviet-backed communists.
The Civil War went on and on until the impending Second Sino-Japanese War interrupted it. Then came a period of resistance against the Japanese. The Allies brought the Japanese to capitulation in August 1945, marking the end of World War II. The Chinese civil war then re-ignited in full in 1946. The fighting came to an end after 23 years in 1950 with an unofficial ceasefire. The Communists then controlled mainland China, and the nationalists held Taiwan and a number of islands off the coast of Fujian. To date, no peace agreement has been signed, although the two parties have close economic ties with each other.