The decimation of the buffalo could be attributed to:
a. social class envy by the Plains Indians.
b. the Bureau of Tobacco and Firearms, a paragon for notoriety, which actually condoned and
encouraged the killings with the Remington rifle.
c. the reckless slaughtering by white Anglos at a rapid rate due to large bands of whites who used
them for food and supplies, especially after the Civil War.
d. women seeking suffrage at the expense of ritual buffalo sacrifices.

C

Explanation:

Due to the abundance of the Buffalo and the major resources gained from killing them ( Meat, Fur, Horns, Bones, etc) it was natural to use them as so even with dwindling numbers. As for after the Civil War, there was a need of a potent resource during reconscrution and exploring more land, ie Buffalo.

the second significant cause of the great migration was the desire of black southerners to escape segregation, known euphemistically as jim crow. rural african american southerners believed that segregation - and racism and prejudice against blacks - was significantly less intense in the north.