How did the arrival of European settlers change life for indigenous people on the plains?
 A 
 The arrival of settlers had no impact on the lives of indigenous people in the Plains region.
 B 
 Settlers killed nearly all the buffalo and most indigenous people were moved to reservations.
 C 
 The settlers and Native Americans used horses to hunt buffalo more effectively and carefully managing the resources.
 D 
 Settlers and the indigenous people of the Plains shared ideas and ways of doing things, continuing to always occupy the same land.