Below are 5 interesting facts about May 23 in Kansas history:

1. On May 23, 1856, the Kansas-Nebraska Act was passed by the U.S. Congress, which allowed the territories of Kansas and Nebraska to decide whether to allow or prohibit slavery. This act led to a bloody conflict known as "Bleeding Kansas," as pro-slavery and anti-slavery factions fought for control of the territory.

2. On May 23, 1871, the first graduation ceremony was held at the University of Kansas in Lawrence. Eleven students received their bachelor's degrees, and the university's first president, John Fraser, gave the commencement address.

3. On May 23, 1934, notorious bank robber Bonnie Parker and her partner Clyde Barrow were killed in a police ambush outside Gibsland, Louisiana. The couple had ties to Kansas, as they had been arrested for a failed robbery attempt in Wellington in 1933.

4. On May 23, 1946, the deadliest tornado in Kansas history struck the towns of Udall and Blackwell. The EF5 tornado killed 77 people and injured 270 others, destroying nearly every building in Udall and causing millions of dollars in damages.

5. On May 23, 2018, Governor Jeff Colyer signed into law a bill that legalized the use of CBD oil for certain medical conditions in Kansas. The law allows patients with debilitating medical conditions to use CBD oil with a prescription from a doctor, as long as the oil contains no more than 5% THC.