1. On December 23, 1783, Delaware became the first state to ratify the United States Constitution. The ratification paved the way for the formation of the federal government and the establishment of a new system of government for the country.

2. In 1828, the first train service in Delaware began operation, running from New Castle to Frenchtown, Maryland. The service was part of the Baltimore and Ohio Railroad and played an important role in the transportation of goods and people in the state.

3. On December 23, 1851, the song "The First Snow-Fall" was written by John Greenleaf Whittier in Wilmington, Delaware. The poem describes the beauty and wonder of the first snowfall and has become a popular Christmas poem.

4. In 1933, construction began on the Indian River Inlet Bridge in Sussex County, Delaware. The bridge, which spans the Indian River Bay, was completed and opened to traffic in 1934. It remains an important link between north and south Delaware.

5. On December 23, 1952, the first color television broadcast in Delaware was aired by WDEL-TV in Wilmington. The station, which was owned by the DuPont Company, was one of the first commercial TV stations in the country to broadcast in color. The broadcast was a major milestone in the history of television.