Which factor contributed to the success of federal troops in the Red River War?

A.

the destruction of Plains villages

B.

the arrest of Big Tree and Satanta

C.

the death of Satank

D.

the extermination of the buffalo

I would say the extermination of the buffalo was a key factor in the routing of the Plains Indians from the Great Plains during the Red River War by the federal troops because these First Nations people depended very much on the buffalo for food, fuel, clothing and construction materials. Pemmican for example was made partly from buffalo meat.