What did they have in Indian reservations?

An Indian reservation is land given to Native Americans from the government. Reservations are managed by the Department of the Interior's Bureau of Indian Affairs. There are 310 reservations in the...

in the 1800's, the settlements in America started to expand westward, claiming the land that once belonged to the Indians that lived there. the government took almost all of their land until they...

So the U.S. could keep track of the Native People. Also to stop them from migrating around and fight the U.S. Government.

Yes, but most likely, you will not be welcomed or liked.

Generally no, but some special allowances are made on a per tribe basis.