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Answer:The Red River War was caused by a combination of factors, including ¹ ² ³:

- The failure of the US government to enforce treaties, such as the Medicine Lodge Treaty, which led to a lack of trust among Native Americans.

- The encroachment of white buffalo hunters onto Native American land, which was seen as a threat to their way of life.

- The attitudes of military leaders, such as General Sherman, who viewed Native Americans as enemies of white race and civilization.

- The rise of a young Comanche medicine man named Isa-tai, who united various Native American tribes and led them in attacks against white buffalo hunters.

- The increasing presence of white settlers and the construction of the transcontinental railroad, which led to increased tensions between Native Americans and whites.

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