pablo42069 pablo42069 14-10-2021 History contestada Why were around 150 Native Americans massacred at Sand Creek? A. Native Americans had raided a governmental building two weeks earlier. B. It was an act of revenge by U.S. Army Colonel Robert Chivington for the death of his family. C. Native Americans would not relocate to Utah. D. Native Americans were defending the gold they found in the Black Hills.