What happened during the Cold War?

an period of high-stakes tension  between russia and us

Explanation:

*** nuclear arms race--> they both attempted to gather as many nuclear weapons as possible to act like a threat to the other

the cw was a period of geopolitical tension between the su and the us  and their respective allies, the 'Eastern Bloc and the Western Bloc', after WW II.

--> the period is generally considered to span the 1947 Truman Doctrine to the 1991 dissolution of the su.

the american revolution was by the middle and upper class, and the french was by the lower and middle class.

a

explanation: