Which policy or initiative contributed most to the nuclear arms race between the united states and the soviet union

The policy contributed most to the nuclear arms race was Mutual Assured Destruction

This means that both sides knew that any attack upon the other would be devastating to themselves, therefore restraining them from attacking the other. Each side possesses enough nuclear weapons to obliterate the other side that causes them to restrain from attacking afraid of the annihilation.

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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in 1862, president lincoln's emancipation proclamation opened the door for african americans to enlist in the union army. although many had wanted to join the war effort earlier, they were prohibited from enlisting by a federal law dating back to 1792.

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