What is the cold war?
The cold war began after World War II in 1945.
The Cold War was a period of geopolitical tension between the United States and the Soviet Union and their respective allies.
The Western Bloc America and the Eastern Bloc Soviet Union (Russia).
It was called "cold" because they didn't use weapons or military forces between the two superpowers, but it was still a scary and tense time for the whole world.