How central to bringing down the Berlin Wall (and signaling the beginning of the end for the Cold War) was Reagan’s foreign policy?

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:

workers should be given a fair share of the wealth their work creates

hope this

is there answer chooses?

d. it gave farmers a way to organize for more political power