1. Louisiana Purchase: On November 15, 1803, the Louisiana Purchase Treaty was signed in Paris, France, which was one of the most significant events in Louisiana's history. With the purchase of Louisiana, the United States gained 828,000 square miles of land, doubling the size of the country.

2. Hurricane Camille: On November 15, 1969, Hurricane Camille struck the Gulf Coast of Louisiana, causing widespread damage and claiming the lives of over 250 people. It remains one of the deadliest and most destructive hurricanes to ever hit the United States.

3. Louisiana Territory: On November 15, 1802, Congress recognized the newly-formed Louisiana Territory, which included the current states of Louisiana, Missouri, Arkansas, Iowa, Minnesota, North Dakota, South Dakota, Nebraska, and parts of Montana, Wyoming, Colorado, and Oklahoma.

4. Jimmie Davis: On November 15, 1944, Jimmie Davis was elected as the 47th governor of Louisiana, serving two non-consecutive terms in office from 1944 to 1948 and 1960 to 1964. Davis is also known for his successful career as a country music singer and songwriter, including his hit single "You Are My Sunshine."

5. Huey Long: On November 15, 1934, Huey Long was shot and fatally wounded in the Louisiana State Capitol building in Baton Rouge. Long, also known as the "Kingfish," was a charismatic and controversial political figure in Louisiana during the Great Depression, serving as both governor and senator before his untimely death.