1. In 1854, the Minnesota Territorial legislature passed a law establishing a public school system. This was a significant step forward in providing education to all citizens of the territory.

2. On February 23, 1863, the First Minnesota Volunteer Infantry Regiment fought at the Battle of Nashville during the American Civil War. The regiment was instrumental in turning the tide of the battle and was praised by General George H. Thomas for its bravery.

3. The Minnesota State Capitol was completed on February 23, 1905. The building was designed by renowned architect Cass Gilbert and is considered one of his most impressive works.

4. In 1939, the first intercollegiate basketball game was played indoors in Minnesota at the Minneapolis Armory. The University of Minnesota played Ohio State University, with the Gophers winning 49-45.

5. On February 23, 1980, the United States Olympic hockey team defeated the Soviet Union in what is widely considered one of the greatest upsets in sports history. The game, known as the "Miracle on Ice," took place at the Winter Olympics in Lake Placid, New York, but it was Minnesota native and University of Minnesota coach Herb Brooks who led the team to victory.