By 1890, the American buffalo (bison) population
- A
Was unchanged from earlier centuries despite settler expansion westward
- Bcheck_circle
Had been reduced from millions to a few hundred, devastating Plains tribes' subsistence
- C
Was federally protected through the new national parks and wildlife reserves
- D
Had grown enormously due to federal protection and conservation efforts
Explanation
Hunting (sometimes encouraged by the U.S. Army to weaken Plains tribes) and disease decimated herds.