What were the three key events of the cold war?

- Containment of Russia.

- Arms Race Between the United States & Russia.

- Development of the Hydrogen Bomb.

The above given were 3 among the 5 key events of the Cold War,

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three key events of the cold war were containment of russia, arms race between the united states and russia, and development of the hydrogen bomb

explanation:

additionally,

the indians crossed artificial boundaries, setting the stage for conflict