1. Battle of New Orleans: On December 7, 1814, the Battle of New Orleans began. It was the final major battle of the War of 1812 and was fought between British and American forces. The American victory at the battle is celebrated as a significant moment in Louisiana's history.

2. Louisiana Purchase: On December 7, 1803, the transfer of Louisiana from Spain to France was completed. The Louisiana Purchase was a significant event in American history as it doubled the size of the United States and opened up vast new territories for exploration and settlement.

3. Snow in New Orleans: On December 7, 2008, New Orleans experienced a rare snowfall. It was the first time the city had seen measurable snow since 1989. Snow in New Orleans is a rare occurrence, making the event noteworthy in Louisiana history.

4. Oil Discoveries: Several significant oil discoveries were made in Louisiana on December 7th throughout history. In 1939, the first production well of the Golden Meadow oilfield was brought in, and in 1958, oil was discovered in the Gulf of Mexico off the coast of Louisiana.

5. Statehood: On December 7, 1816, Louisiana became the 18th state of the United States. The state's unique culture and history have made it a significant part of American heritage, with traditions like Mardi Gras and jazz music helping to shape the country's cultural landscape.