Answer:
The Correct Answer is
Soured very quickly, as Castro increased his anti-US rhetoric and refused to hold elections .
Step-by-step explanation:
From 1956 to 1959, Fidel Castro led a revolution against the dictator Fulgencio Batista, After overthrowing away Batista from the authority in 1959, Castro expelled American businesses from Cuba.
This created a very Soured relationship between the United States and Cuba, because of communist government USSR formed a tight relationship with Cuba shifted towards a planned economy in which the Government controlled almost everything.