1. In 1699, the town of Lewes became the first European settlement in the state of Delaware. The town, located on the eastern coast of the state, was founded by Dutch and Swedish colonizers.

2. Delaware was the first state to ratify the U.S. Constitution on July 25, 1787. Delaware's approval marked a major victory for supporters of the Constitution, and paved the way for other states to follow suit.

3. The USS Delaware, the first ship in the U.S. Navy to be named after the state, was commissioned on July 25, 1910. The ship, a battleship, played a key role in both World War I and World War II.

4. Delaware's infamous prison riot occurred on July 25, 1949. The riot, which lasted for five days and resulted in the death of six people, was sparked by a long-standing dispute between inmates and prison officials over conditions at the facility.

5. On July 25, 2000, Delaware became the first state to enact a law allowing online sports betting. The move paved the way for other states to follow suit, and today, online sports betting is legal in many parts of the United States.