the USA provided the Cuban ruler, General Batista, with economic and military support. Batista was a dictator. His rule was corrupt and unpopular. The Americans supported Batista because he was against communism.
in 1959, after 3 years of revolution, Fidel Castro overthrew Batista.Fidel Castro had won over the majority of Cuba.
Relations between the USA and Cuba became worse because Cubans in the USA formed powerful political pressure groups demanding action against Castro and because Castro took American-owned business land and distributed it to his supporters among Cuba's peasant farmer population.
in 1960, President Eisenhower told the CIA to find ways to overthrow Castro. The USA looked to disrupt the Cuban economy by destroying sugar plantations. The US broadcasted a relentless stream of criticism of Castro.
Castro allowed the USA to keep its naval base and assured Americans that they would be safe in Cuba. However, he allied with the USSR and signed a trade agreement worth $100 million in economic aid and also received arms from the USSR