How do I write a thesis about Was American Expansion Abroad Justified?

According to the map, most mining occurs in the a.northern b.southern c.eastern d.western

This civil war battle took place in northwest georgia in september 1863, and, following over 30,000 casualties in just two days, resulted in a confederate victory.

I’m learning abt the manifest destiny and i don’t know who the people are in the picture can someone tell me who is on the left hand side, right hand side, the women in the center? ?