1. Ethan Allen was born on August 18, 1738, in Litchfield, Connecticut. He went on to become a prominent figure in the American Revolution as the founder of the Green Mountain Boys and a leader of the Continental Army's victory at the Battle of Ticonderoga.

2. On August 18, 1797, the University of Vermont was chartered by the state legislature, making it one of the oldest universities in the country. The university is now known for its strong programs in environmental studies, education, and medicine.

3. The Vermont State Fair has been held over the weekend closest to August 18th since 1856. It is one of the oldest and largest fairs in New England, featuring everything from agricultural exhibits to thrill rides.

4. Vermont became the first state to ban slavery in its constitution on August 18, 1777. The state's founding fathers, including Ethan Allen, believed that slavery was incompatible with the principles of the American Revolution and acted accordingly.

5. On August 18, 1920, Tennessee became the 36th state to ratify the 19th Amendment, which granted women the right to vote. Vermont had already ratified the amendment in February of that year, making it one of the first states to do so.