Mao Zedong (26 December 1893 – 9 September 1976) was a Chinese communist revolutionary, political theorist and the founder of the People's Republic of China (PRC). He led China from the PRC's establishment in October 1949 until his death in September 1976, primarily through his role as the Chairman of the Chinese Communist Party (CCP). Mao Zedong Thought, which he advocated as a Chinese adaptation of Marxism–Leninism, influenced organizations worldwide. Born to a peasant family in Shaoshan, Hunan, Mao studied in Changsha and was influenced by the 1911 Revolution and ideas of Chinese nationalism and anti-imperialism. He was introduced to Marxism while working as a librarian at Peking University, and later participated in the May Fourth Movement of 1919. In 1921, Mao became a founding member of the CCP. After the start of the Chinese Civil War, he helped build the Chinese Red Army, and developed a strategy of guerilla warfare. In 1935, Mao became leader of the CCP during the Long March, a military retreat to the Yan'an Soviet in Shaanxi. The CCP allied with the Kuomintang (KMT) in 1937, but the civil war resumed after Japan's surrender in 1945. He defeated the Nationalist government, which withdrew to the island of Taiwan in 1949. Mao led land redistribution and industrialisation campaigns, suppressed political opponents, and intervened in the Korean War. Afterwards, a brief period of liberalisation, known as the Hundred Flowers Campaign, was also suppressed. From 1958 to 1962, Mao oversaw the Great Leap Forward, a campaign that aimed to collectivise agriculture and industrialise the country, followed by the Great Chinese Famine. In 1966, Mao launched the Cultural Revolution, which was marked by violent class struggle, destruction of historical artifacts, and Mao's cult of personality. Mao died in 1976. He was initially succeeded by Hua Guofeng, then in 1978 by Deng Xiaoping. China under his leadership has been described as a totalitarian regime which resulted in tens of millions of deaths, mainly through famine, as well as political persecution, prison labor, and executions. He is credited with transforming China from a semi-colony into a major world power and promoting literacy, women's rights, basic healthcare, education, and an increased life expectancy. He is recognized for his role in ending imperialism and consolidating the state in China. Under Mao the PRC replaced the Republic of China as a permanent member of the United Nations Security Council, and became the fifth state to possess nuclear weapons.