The United States would be protected by Spain if a conflict with England arose.
USSR began building missile sites in Cuba in 1962.
There was a coup in Cuba in '59. The new government did not like the United States and took over some American businesses.
The missle sites could hit any city in the USA.
American ships blocked Soviet ships carrying misses into Cuba. The Soviets and Cubans agreed to take away the missiles if America promised not to attack Cuba.
Technically, nobody won. Although, the USSR lost China's support after.
Source: https://www.enotes.com/homework-help/what-some-cause-effects-cuban-missile-crisis-508792
Answer: Plasma is a main component of blood, which also consists of mostly water