After the buffalo were hunted to near extinction, what happened to the Indian tribes of the Great Plains?

They were forced into reservation

Explanation:

At that time, herding buffalos was the main source of living for the Indian tribes of the great plains.  This help them survive without having to sell their lands to the government.

After the buffalo were hunted to near extinction, It is extremely difficult for members of the native tribes to find a source of living to feed the members of their community. This made them have no choice but to accept the government's offer and got into the reservation.

the authority to tax.

c) troops march forward in close formation against newer, more accurate weapons