Question: Which U.S. plain were a small cult of Native North Americans who practiced oppositional behavior located?
Sentence (from "Great Plains"): The Great Plains (sometimes simply "the Plains") is the broad expanse of flat land (a plain), much of it covered in prairie, steppe and grassland, that lies west of the Mississippi River tallgrass prairie states and east of the Rocky Mountains in the United States and Canada.
Relevant evidence: Yes