The photograph shows a form of Roman architecture. A dome ceiling with the center opening to the sky. What architectural feature appears in the center of the dome? an aqueduct an arch a mosaic an oculus

b) the importance and limits of political power.

answer; ///i believe that the correct answer is (a) the great depression

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:

i am sure the answer is d