After the Chinese Civil War, the Communists led by Mao Zedong defeated the Nationalists and established control over mainland China, implementing policies like land redistribution that increased their popularity with peasants. However, Mao's Great Leap Forward in the late 1950s that collectivized agriculture and increased industrial output was a failure, resulting in a massive famine that caused the deaths of tens of millions. In the 1960s, Mao launched the Cultural Revolution to purge China of "bourgeois" elements and reassert Communist ideology, leading to widespread social and political turmoil.