1. In 1789, George Washington was inaugurated as the first President of the United States on April 30. His inauguration took place in New York City, which was then the capital of the United States.

2. On April 30, 1803, the United States purchased the Louisiana Territory from France, doubling the size of the country. This acquisition included what is now present-day Louisiana and parts of 14 other states, including Missouri, Arkansas, Iowa, Oklahoma, Kansas, Nebraska, and parts of Minnesota, North Dakota, South Dakota, Montana, Wyoming, Colorado, and New Mexico.

3. The New Jersey Turnpike, one of the busiest highways in the United States, was opened on April 30, 1952. The turnpike runs 122 miles from the Delaware Memorial Bridge in Pennsville Township to the George Washington Bridge in Fort Lee, and it serves as a major route for traffic traveling between the Northeastern and Mid-Atlantic regions of the United States.

4. On April 30, 1967, the Newark riots began as tensions boiled over between police and residents in the predominantly African American neighborhood of Central Ward. The riots lasted for six days and resulted in 26 deaths, over 700 injuries, and countless instances of arson and looting.

5. On April 30, 1977, the historic Princeton-Blairstown Center was dedicated in Hardwick Township. The center, which was founded in 1908 as a summer camp for underprivileged boys, has since grown into a year-round educational facility that serves thousands of young people from diverse backgrounds.