1. In 1819, the first treaty between the United States government and the Ojibwe (Chippewa) Nation was signed in St. Louis, Missouri. This treaty ceded land from the Ojibwe in what is now Minnesota, Wisconsin, and Michigan.

2. In 1857, the Minnesota Territorial Legislature approved the founding of the University of Minnesota. The first classes were held in 1867, and the university has since grown to become one of the largest and most prestigious institutions of higher learning in the United States.

3. On July 22, 1862, President Abraham Lincoln signed a bill into law granting land to establish a railroad line between the Twin Cities of Minneapolis and St. Paul and the town of Duluth on Lake Superior. This helped facilitate the growth of the iron mining industry in northern Minnesota.

4. The Great Northern Railway depot in St. Cloud, Minnesota, opened on July 22, 1909. The depot served as a major transportation hub for Central Minnesota until it was closed in 1975. Today, the building has been restored and is used as a museum.

5. In 1991, the Hennepin County Government Center in downtown Minneapolis was the site of a dramatic courtroom shootout that left two people dead and several others injured. The incident took place during the trial of a man accused of killing a Minneapolis police officer, and it sparked a nationwide debate over courtroom security measures.