1. Vermont Achieved Statehood: On March 12, 1791, Vermont officially became the 14th state to join the Union. Prior to this, Vermont had operated as an independent republic for over a decade.

2. "Maple Open House" Day: In Vermont, March 12 is celebrated as "Maple Open House" day. This is an annual event when maple producers across the state open their doors to the public to showcase their syrup-making process and give visitors a taste of the sweet, Vermont-made treat.

3. Major Flooding: In March 2011, Vermont experienced its worst flooding in over a century. Due to heavy winter snowfall and a sudden warm-up, rivers and streams across the state swelled, causing extensive damage to homes, businesses, and infrastructure. Many communities were left without power, water, or access to essential services.

4. Birth of Howard Dean: On March 12, 1948, Howard Dean was born in New York City. He would later serve as the governor of Vermont from 1991 to 2003 and run for president of the United States in 2004.

5. Vermont Enters World War II: On March 12, 1941, Vermont National Guard troops were ordered to activate in anticipation of entry into World War II. Within months, over 10,000 Vermonters would be serving in the armed forces.