how do the skills of the historian help you to feel empathy for the plain indians?

Answer 1

1. Because they were booted out of thier land with little compensation
2. Because the buffalo were nearly extinct by the white men
3. They were given disease

Basically, knowing how they suffered at the hands of the Europeans allows historians to feel empathy for the natives. They know exactly what happened to them and, if they study that area, have extensive knowledge.

Answer 2

Through description of the hardships? Hope that helps.