Answered

Select all that apply:

Which Native American groups joined together in the mid-nineteenth century to form a powerful alliance that ruled the northern plains?

A. Chinook
B. Cheyenne
C. Arapaho
D. Sioux
E. Chumash



Answer :

GinnyAnswer

Final answer:

Sioux, Cheyenne, and Arapaho formed a powerful alliance in the mid-19th century to rule the northern plains.


Explanation:

Sioux, Cheyenne, and Arapaho joined together in the mid-nineteenth century to form a powerful alliance that ruled the northern plains.


Learn more about Native American alliances in the mid-19th century here:

https://brainly.com/question/32990467