1. Vermont became a state: On December 22, 1791, Vermont officially became the 14th state in the United States after being an independent republic for several years. It is the only state to have achieved statehood after the Constitution was adopted.

2. The Battle of Middlebury: On December 22, 1814, during the War of 1812, a group of British soldiers raided the town of Middlebury in Vermont. The town's militia fought back, resulting in the Battle of Middlebury, which lasted for several hours. The militia was eventually forced to retreat, but the British did not achieve their objective of destroying the town.

3. Vermont's first ski race: On December 22, 1934, the first ski race in Vermont was held on Mt. Mansfield. The race was organized by the Mount Mansfield Ski Club, and several hundred spectators came out to watch the event.

4. The Vermont Studio Center opened: On December 22, 1984, the Vermont Studio Center opened in Johnson, Vermont. It is the largest artist residency program in the United States and has hosted over 12,000 artists from around the world since its founding.

5. Bernie Sanders announces Senate run: On December 22, 2005, Senator Bernie Sanders announced that he would seek re-election to the Senate as an independent. Sanders has represented Vermont in Congress since 1991 and is one of the most well-known politicians in the state's history.