On February 16, 1959, Fidel Castro is sworn in as prime minister of Cuba after leading a guerrilla campaign that forced right-wing dictator Fulgencio Batista into exile. Castro, who became commander in chief of Cuba's armed forces after Batista was ousted on January 1, replaced the more moderate Miro Cardona as head of the country's new provisional government.

Castro's Cuba was the first communist state in the Western Hemisphere, and he would retain control of it into the 21st century, outlasting 10 U.S. presidents who opposed him with economic embargoes and political rhetoric. After the collapse of the Soviet Union in 1991, Castro lost a valuable source of aid, but he made up for it by courting European and Canadian investment and tourism. In July 2006, Castro temporarily ceded power to his brother Raul after undergoing intestinal surgery. His struggles with illness continued, and he officially stepped down in February 2008.