3.) They forced the segregation of African Americans and white Southerners.
The Omaha tribe had been fighting Sioux tribes prior to the period of Lewis and Clark.
They wanted to create an antislavery majority there
Generally speaking, Congress put federal troops in the South to ensure that the most basic elements of Reconstruction were being adhered to, however many see Reconstruction as a failure due to the fact that Congress stopped enforcing it too soon--leading to the rise of Jim Crow laws.
