Answer:
1. The USA and USSR didn't compete on the battlefield as it would most likely result in the use of nuclear weapons and that would be known as Mutually Assured Destruction.
2. The space race was a literal race to space. Trying to get satellites, rockets and later on people in space on a planet. Soviets started the race with the "Sputnik"
3. The Cold War began from what I believe was 1942 but the article seems to say it started around the arms race in 1952
Step-by-step explanation: