1. Chapter 29 Section 2 (Cold War)
Both the United States and USSR worked hard to develop new weapons bringing in the arms race
One effect of the arms race was an ever present threat of nuclear war
This threat also served as a deterrence of an attack by either side
1957, The Soviet Union launched the first satellite, (Sputnik) in history jumping ahead in the space race, the United States responded by staring NASA

2. Cuba
In 1959, Communist rebels under Fidel Castro overthrew the leader of Cuba and established a Communist government
In 1961, the US government led a failed attempt to take Castro out of power it became known as the Bay of Pigs Invasion
This led the Castro to allow Soviet Missiles to be put in to Cuba causing a massive standoff between the US and USSR known as the Cuban Missile Crisis