In one to two, write the “big idea” or main point of thinking like a historian?

Posting again:

Historians work to methodically dissect the past to help us understand the present and avoid making similar mistakes in the future.

The base job of a Historian is to break down a historical events into parts to understand how the historical event or historical arc could have occurred as it did. This could range from "Why did the Japanese bomb Pearl Harbor" to "Why did the Union win the Civil War"

Each question has answers that can help future generations understand the implications of their actions.

abraham lincoln

explanation:

abraham lincoln rejected the final compromise effort to stop the secession movement because it disparaged the gains made by the 1860 election.

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