1. In 1987, the Louisiana World Exposition closed its doors for the final time after a successful three-month run in New Orleans. The exposition, which celebrated the 1984 Louisiana World's Fair, featured numerous exhibits, performances, and attractions that highlighted the cultures and industries of Louisiana and other countries.

2. July 3, 1803, marked a significant event in Louisiana history, as the Louisiana Purchase was officially completed. The United States acquired the territory from France for $15 million, which roughly doubled the size of the country and paved the way for westward expansion and American settlement.

3. On July 3, 1863, Confederate forces under General Richard Taylor defeated Union troops under General Nathaniel Banks at the Battle of Mansfield, one of the largest and bloodiest battles of the Civil War in Louisiana. The Confederate victory gave them control of the region and helped to prolong the war.

4. Jazz music has deep roots in Louisiana, and July 3, 1889, marked the birth of one of the state's most famous jazz musicians, Louis Armstrong. Armstrong grew up in New Orleans and became known for his innovative trumpet playing and distinctive singing style, helping to popularize jazz music around the world.

5. In 2019, Louisiana made history by becoming the first state in the South to elect a Democratic governor for a second term since the 1970s. Governor John Bel Edwards, a pro-life, pro-gun rights Democrat, won a hard-fought campaign against Republican challenger Eddie Rispone, highlighting the shifting political landscape in the historically conservative state.