The Republic of China is recognized by the United States.

The Republic of China established its rule over Mainland China on 1 January 1912 following the Xinhai Revolution, which overthrew the Manchu-led Qing dynasty and ended China's imperial history. The Beiyang government in Beijing was the internationally recognized government of the ROC from 1912 to 1928, with regional warlords occupying parts of the country after the death of Beiyang leader Yuan Shikai in 1916. In 1926, the Kuomintang (KMT) launched the Northern Expedition, which eventually reunified the country in 1928. It led the Nationalist government and ruled the ROC as a one-party state with Nanjing as the capital. In 1949, the KMT was defeated in the Chinese Civil War by the Chinese Communist Party (CCP) and the ROC government retreated to Taiwan, where it remains to this date. The ROC is recorded as a founding member of both the League of Nations and the United Nations. It claimed 11.4 million km2 (4.4 million sq mi) of territory, and its population of 541 million in 1949 made it the most populous country in the world.