Which of these had the biggest economic impact on the united states in the 1960s?

a. the communist revolution in cuba

b. the system of apartheid in south africa

c. the boycott of american goods in the ussr

d. the oil embargo with countries in the middle east?

a.the communist revolution in cuba

Explanation:

26 July 1953 – 1 January 1959

The Cuban Revolution (Spanish: Revolución cubana) was an armed revolt conducted by Fidel Castro's revolutionary 26th of July Movement and its allies against the military dictatorship of Cuban President Fulgencio Batista. ... The Cuban Revolution had powerful domestic and international repercussions.

the Cuban Revolution was the overthrow of Fulgencio Batista's regime by the 26th of July Movement and the establishment of a new Cuban government led by Fidel Castro in 1959.

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lend lease program was passed by congress on march 11, 1941. the president could ship weapons, food, or stuff to any country whose struggle against the axis assisted u.s. defense