Final answer:
Red Cloud's War occurred in 1860 and was a conflict between the Lakota Sioux and the United States military.
Step-by-step explanation:
Red Cloud's War occurred in 1860. It was a conflict between the Lakota Sioux and the United States military over control of the western territories. Red Cloud, a prominent Sioux leader, successfully resisted the US military's efforts to establish forts on Sioux territory.
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