1. On October 4, 1777, the Battles of Germantown was fought in Pennsylvania, just a few miles from Delaware. Delaware soldiers played a crucial role in the battle, which saw British forces repelling an assault by the Continental Army.

2. On October 4, 1863, the Wilmington and Western Railroad began service in Delaware. The railway played an important role in transporting goods and people throughout the state, and it continues to operate today as a heritage railway.

3. On October 4, 1913, Delaware's first state park, Brandywine Creek State Park, was established. The park encompasses 933 acres of wooded hillsides and pristine streams, and it offers visitors an array of recreational activities.

4. On October 4, 1963, the University of Delaware admitted its first African-American student, James Perkins. Perkins went on to become a prominent civil rights leader and educator, and his admission marked an important milestone in the struggle for racial equality in Delaware.

5. On October 4, 2018, Delaware became the first state to offer full-scale sports betting following the Supreme Court's decision to strike down a federal ban on sports gambling. Today, Delaware is home to several sportsbooks, and sports gambling has become a popular pastime for many Delaware residents and visitors.