What william penn did not want in philadelphia

Contrast the ways that frederick douglass and satchel paige to achieve positive changes for african americans.

What new weapon made allied leaders worry about the cost of invading the japanese mainland?

Ihonestly don't know how to revise, like i'm struggling so much to remember things and i really don't know what to do at this rate. does anyone have any advice? especially with american history, i've got 5 topics in this section.