Ahistorian should ask as many questions as possible when analyzing sources and conducting research. why is this important?

-so the historian can try to avoid bias in his\her work
-so the historian can alter his\her perspective
-so the historian can compare and contrast sources
-so the historian connect the past to the present

-so the historian can compare and contrast sources

Explanation:

The historical sources are any testimony (written, oral, material) that allows the reconstruction, analysis and interpretation of historical events. Historical sources constitute the raw material of History.

The diversity of historical sources can be object of different classifications according to their origin, the support in which they are found, the topic they address or to which they refer, intentionality (if they have one), etc.

Because of their origin, historical sources are classified as primary or direct sources and secondary, indirect or historiographic sources.

the exclusive possession or control of the supply or trade in a commodity or service.