id the vision of the reformers directly clash with traditional Sioux values? Why did the Sioux split into several factions during the reservation era?...

How did the vision of the reformers directly clash with traditional Sioux values? Why did the Sioux split into several factions during the reservation era? What efforts did the U.S. government make to acquire even more of the Sioux land in the 1880s? The identification should answer the standard Who? What? When? Where? Why? and Conclude with A Sentence or two on the Historical Importance of the Identification. (at least 400 words)