1. On April 13, 1743, the Delaware Colonial Assembly passed a law that required all individuals who owned a home or land valued at £5 or more to pay a tax of one shilling, sixpence annually. This law helped provide funding for various public works projects in the colony, including the construction of roads and bridges.

2. In 1814, the British Royal Navy blockaded the Delaware River during the War of 1812. On April 13 of that year, a British sloop-of-war named the HMS Rosamond captured a schooner named the Dolphin near Lewes, Delaware. The Dolphin was carrying a cargo of flour and other supplies intended for the American military.

3. April 13, 1861, marked the beginning of the American Civil War. On that day, Delaware's Governor William Burton issued a proclamation declaring the state's neutrality in the conflict between the Union and Confederate armies. Despite this declaration, hundreds of Delawareans joined the Union Army to fight against the Confederacy.

4. In 1946, the DuPont Company opened a research facility in Wilmington, Delaware, that was dedicated to the development of new technologies and products. Today, the DuPont Experimental Station is a world-renowned center for scientific research and innovation.

5. On April 13, 2006, Delaware ratified a law that made it the first state to ban smoking in all indoor public places, including bars and restaurants. The law was designed to protect the health of workers and patrons who could be adversely affected by secondhand smoke. Today, many other states and cities have adopted similar laws aimed at reducing the harmful effects of smoking.