Definitely talk about the culture change. For example, (I think) the Chinese Immigration of 1800's. The Chinese would immigrate to America in order to get and send money to their families. Americans did not like this at the time and afraid that their culture would spread and be non-American. So that's why we had China Towns, so the migrants would be closer to their own people and not be hated on at least. A lot things happened, but it was soon fixed many years later.
I hope this gave some ideas!
