Which emperor changed land laws to help the poor and revised taxes

If you're referring to Rome then the answer would be Augustus

Explanation:

If not, then be more clear in your question next time ;)

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:

answer; ///(1) blank; henry clay; (2) blank; secretary of state; (c)is your answer; ///good luck