What questions might a historian ask in order to organize the principles of region, period, and theme?

A historian might use each of the organizing principles of the region, period, and theme to construct a historical narrative, in that the historian writes about the determined historical event with fictional characters that help it to improve the quality of the narrative, always respecting the historical facts, locations, and time of the event. It is very important to note that the historical narrative has to be written in chronological order to never alter the facts and time, and never confuse the reader or misinform it.

Explanation:

i got lazy so i copied/pasted someone else's answer. PLZ don't get upset at me

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answer; i believe the correct answer is (the willamete valley);