Based on historical accounts, the statements that accurately describe native Americans and the union in the west during the civil war include, "The Navajo's Long Walk was the Navajo people's forced removal from their ancestral lands by the U.S. army."
The other statements that accurately describe native Americans and the union in the west during the civil war include the following:
The U.S. army attacked the Kiowas and Comanches in the Southwest in retaliation for raids on settlements and ranches.
The Cherokee, forced to Oklahoma by the Indian Removal Act, still owned slaves and sided with the Confederacy at the time of the Civil War.
Hence, in this case, it is concluded that there were a series of American civil wars involving the United States against the Native Americans in the 19th century.
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