One of the main reasons that the Sioux were able to develop control over a substantial area in North America was that
A) many other tribes, such as the Cheyenne and Crow, joined them.
B) they received assistance from the British government.
C) they built cities and developed a superior network of trade.
D) smallpox epidemics helped in their conquests.

Question

Quizplus · Accepted Answer

The Sioux were able to expand their control in part because smallpox epidemics decimated many of the tribes they encountered, weakening those communities and making it easier for the Sioux to exert dominance over a substantial area.

One of the Main Reasons That the Sioux Were Able