Question

which revolution first convinced U.S officials they had to stop the spread of communism in the western hemisphere

a. the coup to overthrow juan bosch in the dominican republic
b. fidel castros revolution in cuba
c. the revolution to overthrow salvador allende in chile
d. the assassination on rafael trujillo in the dominican republic

Answer 1

B. Fidel castros revolution in cuba 

Answer 2

The correct answer is Fidel Castro's revolution in Cuba.

This event really showed the U.S that communism was spreading easily and rapidly. They realized that they needed to contain it quick! :D