Answer:
A harsh winter killed off the cattle
Explanation:
Severe winters in the 1880s caused the deaths of thousands of open-range cattle and thus cut down the number of cattle drives. Many ranches went out of business. Many ranchers had expanded too quickly and allowed overgrazing of their land to occur.
It was difficult for Congress to fulfill its duties under the Articles of Confederation because Congress lacked the power to regulate foreign trade, and most congressional decisions required the approval of at least nine states.
D I think Becouse non of them Becouse the environment changed