Answer:he Sand Creek massacre (also known as the Chivington massacre, the battle of Sand Creek or the massacre of Cheyenne Indians ) was a massacre of Cheyenne and Arapaho people by the U.S. Army in the American Indian Wars
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Answer:Cheyenne tribe once put into reservation by U.S. Army, Army opened fire on the Natives, 150 died.
Explanation: Hope this helps :) BRAINLIEST?
