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[The causes of the Sand Creek massacre were rooted in the long conflict for control of the Great Plains of eastern Colorado. ]
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[The Battle of the Little Bighorn, also called Custer’s Last Stand, marked the most decisive Native American victory and the worst U.S. Army defeat in the long Plains Indian War.](https://www.history.com/topics/native-american-history/battle-of-the-little-bighorn0
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The Nez Perce War was an armed conflict that pitted several bands of the Nez Perce tribe of Native Americans and their allies.(https://en.wikipedia.org/wiki/Nez_Perce_War)