1. On March 14, 1766, the Stamp Act was repealed. This act imposed taxes on printed materials in the American colonies, leading to protests and unrest. Delaware played a significant role in opposing the Stamp Act, with the Stamp Act Congress held in New York City in 1765 including representatives from Delaware.

2. Delaware became the first state to ratify the federal Constitution on March 14, 1788. By doing so, Delaware helped to establish the new federal government and set the stage for other states to follow suit.

3. On March 14, 1929, the Delaware Memorial Bridge Commission was created. This organization was tasked with building a bridge across the Delaware River between Delaware and New Jersey. The bridge was completed in 1951 and remains an important transportation link between the two states.

4. In 1968, Republican candidate Pierre S. du Pont IV announced his candidacy for governor of Delaware on March 14. du Pont went on to win the election and served as governor from 1977 to 1985, implementing a number of innovative policies and earning national recognition for his work.

5. On March 14, 2012, a shooting occurred at the New Castle County Courthouse in Wilmington, Delaware. Three people were killed, including the shooter, who was a former police officer. The incident brought renewed attention to issues of gun violence and safety in public spaces.