plains indians or indigenous peoples of the great plains and canadian prairies are native american tribes with similar cultures in the interior plains. this includes the great plains and canadian prairies. it is between the rocky mountains and the mississippi river. the landscape is mostly flat grasslands and plains. the natives were often on the move (nomadic) and used horses. natives mainly hunted bison. these people have become part of popular culture. they were one of the last natives to be taken over. this particular native group has become a stereotype for natives in literature and art.