1. In 1836, the first steam-powered mill in Missouri was established in St. Louis. The mill was owned by William McKnight and could produce up to 1,000 barrels of flour a day.

2. On April 21, 1917, the Missouri National Guard was mobilized for World War I. Over 11,000 troops were sent overseas to serve in the war effort.

3. In 1930, the Missouri State Penitentiary in Jefferson City was the site of a major prison riot. Over 3,000 prisoners went on strike, resulting in the death of one inmate and the injury of several others.

4. In 1963, Kansas City hosted the first ever National Football League (NFL) draft. The draft was held at the Sheraton-Kansas City Hotel and 20 players were selected in the first round.

5. On April 21, 1983, the Missouri Legislature passed a bill creating the Ozark National Scenic Riverways, which protects the Current and Jacks Fork rivers in south-central Missouri. The area covers over 80,000 acres and attracts over 1 million visitors every year.