1. On August 9, 1812, Louisiana became the 18th state in the United States. The state's history can be traced back to the Louisiana Purchase in 1803, when the territory was purchased by the United States from France.

2. August 9, 1862 marked the beginning of the Battle of Baton Rouge during the American Civil War. Confederate forces, led by General John C. Breckinridge, attempted to capture the city but were ultimately repelled by Union forces under General Thomas Williams.

3. The Great Acadian Awakening, a cultural and political movement among Louisiana's Cajun population, was officially launched on August 9, 1968. The movement aimed to promote and preserve Cajun heritage, language, and traditions.

4. On August 9, 1979, Hurricane Frederic made landfall near Dauphin Island, Alabama, causing significant damage in Louisiana and other Gulf Coast states. The storm resulted in 9 fatalities and caused over $2 billion in damage.

5. August 9, 2005 marked the beginning of Hurricane Katrina, one of the deadliest and costliest storms in United States history. The storm devastated the Louisiana coast, causing over 1,800 fatalities and $125 billion in damage.