1. On December 13, 1819, the Alabama Territory was admitted as the 22nd state of the United States of America. This marked an important milestone in the history of Alabama and the nation as a whole.

2. In 1862, during the Civil War, the Battle of Fredericksburg took place on December 13. A group of Alabama soldiers, known as the Mobile Rifles, fought bravely in the battle and suffered significant casualties.

3. The state of Alabama celebrates December 13 as its official state holiday, known as Alabama Day. This day is marked by various cultural and historical events across the state, as well as commemorative ceremonies.

4. On December 13, 1931, the first expedition to reach the bottom of the Gulf of Mexico took place. This scientific mission, led by an Alabama-born geologist named Eugene McDermott, explored the ocean floor and discovered new species of marine life.

5. December 13 is also the birthday of George C. Wallace, a prominent Alabama politician who served as governor of the state for four terms. Wallace is known for his controversial stance on civil rights and his infamous segregationist policies.