1. In 1806, the state of Delaware passed a law abolishing the importation of African slaves into the state.

2. On December 13, 1937, the state of Delaware experienced one of its worst floods in history, causing extensive damage to homes and infrastructure across the state.

3. On December 13, 2006, Delaware Senator Joe Biden declared his intention to run for President of the United States, marking his third attempt at the presidency.

4. In 1787, the Delaware State House in Dover was established as the first capital of the United States, where the U.S. Constitution was ratified.

5. On December 13, 1907, the first intercounty highway in the United States was opened in Delaware, connecting the cities of Wilmington and Dover. The road was paved with macadam and became known as the Dupont Highway.