Historians attempt to answer the a0, a1, a2, a3, and a4 questions of history.

Answer and explanation:

The questions that every historian must answer to know about the story are four:

Who: Essential to know who are the subjects immersed in the story.

When: It puts us in a certain time.

Where: We will know the place where the events took place

Why: The causes that carried out the event are determined.

geography

this is because warmer climates often don't get people sick from the flu and regions where it was often colder more people received the flu. hope this if you need more reasoning i am here to