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This person was a powerful figure in the communist party. Politically a Marxist–Leninist and Cuban nationalist, Fidel Castro also served as the First Secretary of the Communist Party of Cuba from 1961 until 2011. Under his administration Cuba became a one-party socialist state; industry and business were nationalized, and state socialist reforms were implemented throughout society. Internationally, Castro was the Secretary-General of the Non-Aligned Movement from 1979 to 1983 and from 2006 to 2008.He stepped down in 2011.