All u have to do it pick one!
which of the following led to world war ii?
a) the munich agreement was unfair because germany lost too much land.
b) the non-communist world was concerned about hitler's enthusiasm for communism.
c) britain and france took too strong a stand against hitler's aggression's.
d) the treaty ending world war i caused great resentment in germany.

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: