Why did the Superpowers not want to use their nuclear weapons?

In spite of provocations, neither side would want to risk war since no political gains would justify the destruction of their societies. In the event of a nuclear war,.

God's knowns

Explanation:

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option d is correct. corroborated sources of historical evidence   is necessary to validate a claim about an event in history.

historians tend to use written sources, but audio and visual materials as well as artifacts are important objects that supply information to modern historians.

historical sources are usually divided into two categories: primary and secondary sources. depending on the historian's intent, some sources shift their designation. determining what type of sources toimplement, and the level of credibility and reliability of those sources, is a significant step in critical thinking for the historian.

explanation: