1. On September 19, 1851, the Treaty of Traverse des Sioux was signed between the U.S. government and Dakota Indians, ceding millions of acres of land in Minnesota and Iowa to the government in exchange for annuities and other benefits. This treaty resulted in the forced removal of thousands of Dakota people from their ancestral lands and ultimately led to the bloody conflict known as the Dakota War of 1862.

2. September 19, 1885, marks the founding of the Minnesota State Horticultural Society, a group dedicated to promoting the cultivation and marketing of fruits, vegetables, and ornamental plants in the state. Today, the society remains an important resource for growers and gardeners across Minnesota.

3. Major League Baseball returned to Minnesota on September 19, 1961, when the newly-formed Minnesota Twins played their first game at Metropolitan Stadium in Bloomington. The Twins have since become a beloved institution in the state, winning two World Series championships in 1987 and 1991.

4. September 19, 1970, was a dark day in Minnesota history as a small plane carrying six members of the University of Minnesota's football team crashed shortly after takeoff, claiming the lives of all on board. The tragedy rocked the entire state and led to an outpouring of grief and support for the victims' families.

5. On September 19, 2014, the city of Minneapolis became the first in the U.S. to pass a resolution officially recognizing Indigenous Peoples Day, honoring the contributions and resilience of Native Americans in Minnesota and beyond. This move was seen as a step towards acknowledging and correcting the injustices suffered by indigenous peoples throughout U.S. history.