What social changes took place in the United States after World War II? What role did the war play in those changes? How did the wartime experiences of African Americans contribute to the drive for greater civil rights after the war?

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:

ok whats to talk about were you scared or what?