Doesn't have anything to do with Col. Snelling, it has to do with the 1860s. Long story very short:
-several thousand years ago: (according to some Dakota people) their people are created at the junction of the Minnesota and Mississippi Rivers.
-1820: US gov't builds a fort at that junction.
-1837, '51: Dakota nation coerced into signing treaties with the US. They cede everything south of I-94 to the US, in exchange for money, food and training to become farmers.
-1851-62: US gov't only poorly fulfills the treaties, and traders leech off the payments that arrive to the Dakota. Dakota start getting very angry.
-1837-62: White settlers arrive and take over old Dakota hunting areas as homesteads.
-1861: Civil War starts, many soldiers leave MN to fight in the South.
-1862: Some Dakota go on the warpath. Several hundred killed on either side in SW MN (appx. Mankato to Browns Valley.) Other Dakota avoid fighting, and some even side with the settlers. HUGE rifts happen in the Dakota community. All of the Dakota are moved out of their homeland at gunpoint. Some were interned at a camp below Fort Snelling in the river bottoms, and of ~1700, 2-300 died from disease and malnourishment.