Mao Zedong, also transliterated as Mao Tse-tung, (26 December 1893 – 9 September 1976) was the chairman of the Politburo of the Communist Party of China from 1943 and the chairman of the Central Committee of the Communist Party of China from 1945 until his death. Under his leadership, the CCP became the ruling party of mainland China as the result of its victory in the Chinese Civil War. On 1 October 1949, Mao declared the formation of the People's Republic of China at Tiananmen Square.
Mao developed a brand of Sinified Marxism-Leninism communism known as Maoism, paralleling the political ideology known as Stalinism. While in power, he started a series of experiments aimed at speeding up China's economic development known as the Great Leap Forward. The Great Leap Forward sought to rely on labour instead of capital to help agriculture and industries succeed. Unfortunately, as a result of the Great Leap Forward, at least 20 million people starved to death. He forged, and later split, an alliance with the Soviet Union and launched the Cultural Revolution, with its stated goal of purging Chinese society of bourgeoisie elements and enforcing socialism.
Mao is widely credited for creating a mostly unified China free of foreign domination for the first time since the First and Second Opium Wars of the mid-nineteenth century. Mao has also been criticized for his inefficient response to the famine of 1958–1961 and the violence of the Cultural Revolution.
Mao Zedong is commonly referred to as Chairman Mao (毛主席). At the height of his personality cult, Mao was commonly known in China as the "Four Greats": "Great Teacher, Great Leader, Great Supreme Commander, Great Helmsman".