I think it’s a or c sorry if it’s wrongs
Cherokee v,. Georgia determinded that they were a separate foreign entity and did not have to be moved.
President Jackson ignored Marshall's ruling and moved them anyway.
The European settlers treated the native Americans like slaves. they invaded their space, set up gold mines and didnt show any respect for them or their beliefs at all. lots of native Americans were killed by the settlers, and there were many wars over control of the land. i hope this helps :)
Because they thought the confederacy was going to attack their new territory