1. In 1638, Swedish colonists established the settlement of New Sweden along the Delaware River in what is now New Jersey. This helped to establish what would later become the state's rich cultural heritage.

2. On March 12, 1776, the New Jersey Legislature authorized the creation of the state's first military force. This was an important step in the state's efforts to defend itself against British invasion during the American Revolution.

3. The state's first official seal was adopted on March 12, 1777. The seal features a horse's head and a shield, and has undergone several revisions over the years.

4. On March 12, 1925, the O. Henry Ballroom in New York City hosted the first-ever public demonstration of television. The event was organized by the American Telephone and Telegraph Company, which had recently developed a new method of transmitting images over long distances.

5. March 12, 1999, was a snowy day in New Jersey, with up to 30 inches of snow falling in some parts of the state. The storm caused widespread power outages and travel disruptions, but also provided a picturesque winter wonderland for those who were able to venture outside.