USA HISTORY

Detailed explanation-1: -To help discourage Soviet communist expansion, the United States built more atomic weaponry. But in 1949, the Soviets tested their own atomic bomb, and the Cold War nuclear arms race was on.

Detailed explanation-2: -The “space race” was a Cold War competition between the United States and the Soviet Union to develop aerospace capabilities, including artificial satellites, unmanned space probes, and human spaceflight.

Detailed explanation-3: -The Space Race was a 20th-century competition between two Cold War rivals, the United States and the Soviet Union, to achieve superior spaceflight capability. It had its origins in the ballistic missile-based nuclear arms race between the two nations following World War II.

Detailed explanation-4: -The US government’s decision to develop a hydrogen bomb, first tested in 1952, committed the United States to an ever-escalating arms race with the Soviet Union. The arms race led many Americans to fear that nuclear war could happen at any time, and the US government urged citizens to prepare to survive an atomic bomb.