Which of these conclusions can be based on a study of the han and roman empires a. large empires may last permanently as long as they possess military strength b. the larger an empire becomes in area, the harder it is to control over time c. empires fall quickly if they contain a wide variety of cultures and religions d. large empires can survive hardships as long as they have lasting sources of wealth

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:

they forced them to b sell their land

not all were fit for battle and were weak.