1. In 1963, the University of Nebraska-Lincoln Men's basketball team won the NCAA tournament, becoming the first team from the state to do so. The team defeated St. Joseph's 60-58 in overtime.

2. March 23, 1867 was the day when Nebraska officially became a state, after years of campaigning for statehood. President Andrew Johnson signed the Nebraska Statehood Bill into law, making Nebraska the 37th state in the United States.

3. On March 23, 1875, the first telegraph line was established between Omaha and Lincoln, connecting the two major cities in Nebraska. This made communication faster and more efficient, and paved the way for other technological advancements in the state.

4. In 1934, the infamous "Kansas City Massacre" took place, where law enforcement officers attempted to capture notorious gangster Charles Arthur "Pretty Boy" Floyd in Kansas City. However, the shootout resulted in the deaths of four law enforcement officers and one criminal, who turned out not to be Floyd.

5. March 23, 1909, marked the birth of William L. Adams, a Nebraskan farmer who invented the center-pivot irrigation system in the 1940s. Today, this technology is used all over the world to irrigate crops efficiently and increase crop yields.