What developments led to eased tension during
the Cold War

What eased Cold War tensions?

Explanation:

Détente, period of the easing of Cold War tensions between the U.S. and the Soviet Union from 1967 to 1979. The era was a time of increased trade and cooperation with the Soviet Union and the signing of the Strategic Arms Limitation Talks (SALT) treaties. Relations cooled again with the Soviet invasion of Afghanistan.

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