Question

the first reservations for american indian tribes were established by the indian removal act. by the dawes act. after the civil war. during the colonial period.

Explanation:

The first American - Indian reservations were established during the colonial period as a way for colonizers to deal with Native American tribes. The Indian Removal Act (1830) was about moving tribes, not establishing first reservations. The Dawes Act (1887) dealt with land - allotment. Reservations predated the Civil War.

Answer:

during the colonial period.