5. Why did the nuclear arms race begin in 1949? What were the goals of this nuclear arms race?

-The nuclear hands race started in 1949 due to the fact of the soviet
union. It was once stated that whoever owned greater nuclear
weapons used to be greater powerful.

6. What is mutually assured destruction? How did it affect
the way the USSR and UetSA interacted with one another?

-MAD is the perception that each aspects of the warfare have
enough weapons to defeat every other.