Manufacturing, mining, urban growth, and increased immigration were prevalent to the North in the years leading up to the civil war
Answer:
The Cuban Missile Crises. ... Soviet Premier Nikita Khrushchev saw an opportunity to strengthen the relationship between the Soviet Union and Fidel Castro's Cuba and make good its promise to defend Cuba from the United States. In May 1960, Khrushchev began to ship ballistic missiles to Cuba and technicians to operate them.
Explanation: