How did American Revolution change the idea of "classes" of people?

  The American Revolution was an ideological and political revolution which occurred in colonial North America between 1765 and 1783. The American Patriots in the Thirteen Colonies defeated the British in the American Revolutionary War, gaining independence from the British Crown and establishing the United States of America, the first modern democracy.

answer; ///i believe its (b); ///the president will sign it or veto the check first good luck

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: