The Kuomintang is a Chinese political party founded in 1912. It was formed in the context of the 1911 Chinese revolution against the Qing dynasty, and had its origins in Revive China Society, a Han nationalist organization. During the period of 1912 until the Chinese revolution in 1949, the Kuomintang led the government of mainland China, and since 1937 allied with the Communist Party of China against Japanese imperialism.
After the revolution, the Kuomintang lost favor to the Communist Party of China, and the party and its supporters fled mainland China to Taiwan.