MAO TSE-TUNG: As communist revolutionary leader, Mao Tse-tung (1893-1976) helped form the Chinese Communist Party in 1921. Later, he served in SUN YAT-SEN's Kuomintang government until CHIANG KAI-SHEK took over and purged the government of communists in 1928. Mao, with his fellow communist Chuh Teh, formed the Fourth Chinese Red Army and led them on a six-thousand-mile Long March to SHENSI province in northern CHINA. After a truce between Mao's communists and Chiang Kai-shek's Nationalists during World War II, civil war broke out, with Mao successfully driving out the Nationalists and taking over as head of the People's Republic of CHINA in 1949. He then collectivized land and purged CHINA of all dissidents and non- communists during the Great Proletarian Cultural Revolution in 1966. He ruled CHINA until his death in 1976. (See also China article).