1. In 1631, the first permanent European settlement in Delaware was established by the Dutch on the present site of Lewes. This occurred on February 4, marking an important date in the history of Delaware.

2. On February 4, 1776, Delaware became the first state to ratify the U.S. Constitution, a landmark event in American history. The Constitution was ratified by a unanimous vote of all 30 delegates present, including Thomas McKean, George Read, and John Dickinson.

3. In 1801, Pierre Samuel du Pont de Nemours arrived in Wilmington, Delaware, with his son Eleuthere Irenee du Pont. They founded the DuPont Company the following year, which became one of the largest chemical companies in the world. On February 4, 1804, a patent was issued to Eleuthere Irenee du Pont for the production of black powder using charcoal and sulfur as the principal ingredients.

4. On February 4, 1974, the landmark Supreme Court case Roe v. Wade was handed down, establishing a woman's right to choose to have an abortion. This decision had significant ramifications for the state of Delaware and the rest of the country.

5. On February 4, 2018, the Philadelphia Eagles won their first Super Bowl title by defeating the New England Patriots 41-33. Delaware is a major hub for Eagles fans and the team's victory sparked celebrations throughout the state.