Answer:
Correct answer is D. The US government encouraged mass buffalo hunting.
Step-by-step explanation:
Correct answer is D because during the period of mass industrialization country encouraged the hunting of buffalos, because their skin was used for industrial needs. That led to killing of millions buffalos.
A is not correct as Winter War is connected to war between Soviet Union and Finland.
B is not correct as government want to stop the nomadic life of Indians and to make them live in settlements in which the white people were living.
C is not correct as this raids were not connected to extermination of buffalos and were part of Plains wars.