1. Ethan Allen was born on September 5, 1738, in Litchfield, Connecticut. He became a prominent figure in Vermont history as the leader of the Green Mountain Boys during the American Revolution and was instrumental in establishing Vermont as a state.

2. In 1777, Vermont adopted its first constitution, becoming the first state to do so independently of the original thirteen colonies. The constitution abolished slavery and established universal suffrage for all adult white males.

3. The Battle of Plattsburgh, a pivotal naval battle during the War of 1812, took place on September 5, 1814, on Lake Champlain between British and American forces. The American victory secured the northern border of the United States and helped to end the war.

4. On September 5, 1850, the first Fugitive Slave Law Convention was held in Montpelier, Vermont. The convention was called in response to the newly passed Fugitive Slave Act, which required citizens to aid in the capture and return of runaway slaves.

5. In 1977, Vermont became the first state to ban billboards within its borders. The ban was established as a way to preserve the state's natural beauty and has since been emulated by several other states across the country.