Geographers rank human settlements based on what two factors? a. population and size by area b. size by area and impact/importance to the region c. population and impact/importance to the region d. population and growth rate **the answer is c. population and impact/importance to the region**

the answer for this question is C i just took the test and it says C is is correct

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:

wwii

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