Answer:
they basically worked together and killed everyone
Explanation:
And I don't know the explanation
they most likley sacrificed them in order to give something of value to the gods before they used it themselves.
The plan called for a naval blockade of the Confederate littoral, a thrust down the Mississippi, and the strangulation of the South by Union land and naval forces.
Cherokee, Choctaw and Seminole
Hope this helps :3