Answer:
D. Expansion severely limited the buffalo population.
Step-by-step explanation:
- The western expansion included construction of rail roads that passed through the great plains.
- The railroads passed through the plains, affecting the landscape of the plains permanently.
- This also made the game animals that the plain Indians used for food diminish.
- As a result, the plain Indians rose defend the destruction of their natural environment by the expansion efforts of the western.