What was the african diaspora? a. the trade relationship between africa, america, and the west indies b. the return of descendants of african slaves to africa c. the movement of african people from africa to other parts of the world due to slavery d. the sahara desert, which serves as a natural border in africa

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:

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