1. In 1638, Swedish colonists landed in what is now known as Wilmington, Delaware, and established Fort Christina, marking the first permanent European settlement in Delaware.

2. In 1789, Delaware became the first state to ratify the United States Constitution, earning the nickname "The First State."

3. In 1895, Annie Jump Cannon was hired as an astronomer at Harvard University. She would go on to develop the "Harvard Classification," a system for categorizing stars based on their temperature and spectral characteristics.

4. In 2004, Delaware became the first state to ban the use of handheld cellphones while driving.

5. In 2019, Delaware elected its first female state senator, Democrat Sarah McBride, who also became the country's highest-ranking openly transgender elected official.