Relations between the US and Cuba were fine until: Bay of Pigs

The Soviet Blockade

Cuban Missile Crisis
Death of Fidel Castro

Bay of Pigs.

Explanation:

The Bay of Pigs was the unsuccessful invasion on the Southwestern coast of Cuba by Cuban exiles discreetly supported by the United States. This botched invasion was initiated by the CIA in an attempt to remove Cuban leader Fidel Castro from power.

This April 1961 event not only botched the relations between the US and Cuba. It also rendered Castro to initiate relations with the Soviet Union, inviting military officials into Cuba and signing agreements with the Soviets. And this wedge or disruption in US-Cuba relations will be further cemented by the failed Cuban Missile Crisis of Oct 1962.

Thus, the Bay of Pigs was the first event that led to the disruptions of relations between the two countries.

shang dynasty

western zhou (ca. 1046-771 bce)

eastern zhou (ca. 771-256 bce)

to extend a country’s power and influence