What is a Indian reservation?

A federal Indian reservation is an area of land reserved for a tribe or tribes under treaty or other agreement with the United States, executive order, or federal statute or administrative action as permanent tribal homelands, and where the federal government holds title to the land in trust on behalf of the tribe.

Explanation:

plz mark brainleist

1.) irish.

2.) settlers could obtain cheap land nearby

3.) steam engine

explanation:

the american civil war was not caused   by slavery but by economic factors.