1. The Delaware Statehood Day:
On December 16, 1787, Delaware became the first state to ratify the United States Constitution, and this day is celebrated in Delaware as the Statehood Day.

2. Delaware River Freeze:
In 1776, during the American Revolutionary War, the Delaware River froze, which allowed General George Washington's forces to cross the river and attack the Hessian forces in Trenton, New Jersey, which was a pivotal moment in the war.

3. First African-American School Superintendent:
In 1963, Dr. Jackson P. Shaffer, became the first African-American superintendent of schools in Delaware.

4. First Casino in the state:
In 1995, Delaware Park, a horse racing track, became the first venue to offer casino-style gambling in the state of Delaware. It became a popular destination for tourists and gambling enthusiasts.

5. Delaware’s 200th Anniversary Celebration:
In 1976, Delaware celebrated its 200th anniversary of statehood with various events, including a parade, fireworks, and a ball. Notable guests included President Gerald Ford and Vice President Nelson Rockefeller.