1. In 1861, Louisiana joined the Confederate States of America as the sixth state to secede from the Union. This decision ultimately led to the state's involvement in the Civil War.

2. On May 20, 1927, the Mississippi River levee system in Louisiana failed during a period of heavy rainfall, resulting in one of the worst natural disasters in American history. The resulting flooding caused extensive damage to property and loss of life.

3. In 1972, Senator J. Bennett Johnston Jr. of Louisiana introduced legislation that ultimately led to the formation of the Red River Waterway Commission. The Commission oversees the development and maintenance of waterways in Louisiana, helping to provide economic opportunities for the state.

4. Louisiana State University's Agricultural Center was established on May 20, 2006. The center focuses on research and outreach programs to support Louisiana's agricultural industry.

5. The Louisiana Hayride, a popular country music radio program, debuted on May 20, 1948. The show helped launch the careers of many notable musicians, including Elvis Presley, Johnny Cash, and Hank Williams.