1. On June 18, 1812, the United States declared war on Great Britain, which would be known as the War of 1812. Rhode Island played a significant role in the war effort, providing soldiers and supplies to the cause.

2. In 1873, the Rhode Island Agricultural Society held its first fair on June 18. The fair, which showcased livestock, farm products, and artisan crafts, would become an annual event and eventually evolve into the popular Rhode Island State Fair.

3. Rhode Islander and Brown University graduate John D. Rockefeller Jr. was born on June 18, 1874. The philanthropist and oil tycoon would go on to make substantial donations to Rhode Island institutions including Brown University and the Rhode Island School of Design.

4. On June 18, 1903, the first automobile show in Rhode Island was held in Providence. The event featured the latest models of cars and motorcycles and was attended by thousands of people.

5. In 1936, Rhode Island passed a law on June 18 that guaranteed state employees the right to collective bargaining. This was a significant victory for labor unions, which had been fighting for improved working conditions and better wages for decades. Today, Rhode Island remains a union-friendly state with a strong labor presence.