1. On December 14, 1814, the Treaty of Ghent was signed, ending the War of 1812 between the United States and Great Britain. This treaty ensured the return of all conquered territories to their rightful owners and established a commission to solve boundary disputes between the two nations.

2. In 1911, the Baltimore Opera House (now known as the Hippodrome Theatre) opened its doors for the first time. This historic theater has hosted performances by numerous famous artists, including Frank Sinatra, Elvis Presley, and Aretha Franklin.

3. December 14, 1926 marks the day when the Harriet Tubman Museum and Educational Center was established in Cambridge, Maryland. This museum preserves and tells the story of the life and legacy of the prominent abolitionist and freedom fighter, Harriet Tubman, who was born in Dorchester County, Maryland.

4. Maryland's first snowmobile fatality occurred on December 14, 1974, when a snowmobiler crashed into a tree near Oldtown, Maryland. This tragic incident prompted the state government to establish stricter regulations around the use of snowmobiles on public lands.

5. On December 14, 2013, Annapolis became the first city in Maryland to receive the "Purple Heart City" designation. This honor recognizes cities and towns that have demonstrated a commitment to honoring and supporting military veterans who have been wounded or killed in combat.