1. On March 24, 1638, Swedish settlers established the colony of New Sweden in Delaware. This marked the first permanent European settlement in the Delaware Valley.

2. On March 24, 1778, General George Washington and his troops arrived in Wilmington, Delaware during the American Revolution. The city was briefly occupied by the British before being retaken by American forces.

3. On March 24, 1837, the Bank of Delaware was established in Wilmington. It was the first bank chartered by the state of Delaware.

4. On March 24, 1865, the Delaware legislature passed a law prohibiting the sale of alcohol in the state. This law remained in effect until the repeal of Prohibition in 1933.

5. On March 24, 1913, the DuPont Company announced an expansion of their plant in Wilmington, which would become the largest explosives factory in the world. The factory played a significant role in both World War I and World War II, producing materials for the Allied war effort.