1. Louisiana became a state: On August 22, 1812, Louisiana was admitted as the 18th state of the United States. This followed the Louisiana Purchase in 1803, when the territory was acquired by the US from France.

2. Hurricane Katrina: On August 22, 2005, Hurricane Katrina made landfall in Louisiana, causing widespread destruction and loss of life. The storm caused over $100 billion in damage and is considered one of the worst natural disasters in US history.

3. Louisiana World Exposition: On August 22, 1984, the Louisiana World Exposition opened in New Orleans. The expo featured exhibits from around the world and attracted millions of visitors during its six-month run.

4. Huey P. Long assassination: On August 22, 1935, Louisiana politician Huey P. Long was assassinated in Baton Rouge. Long was a controversial figure, but is remembered for his efforts to improve infrastructure and provide healthcare and education to the state's poor.

5. Jazz musician born: On August 22, 1908, jazz musician Ray Charles was born in Albany, Georgia. Although not from Louisiana, Charles frequently performed in the state and was a major influence on many Louisiana musicians.