In the early 1800s the U.S. government said it needed more land in this area. The Dakota signed a treaty with the U.S. government for the land where the Minnesota River joins the Mississippi, and, in the 1820s, Fort Snelling was built there.
During the years that followed, the Dakota and Anishinabe tribes were forced to sign treaties to relinquish most of Minnesota to the U.S. government. Thousands of new people poured into the region to build farms and cut timber. In 1858, Minnesota became the 32nd state.