1. In 1820, Maine became the 23rd state in the United States of America. The Maine Statehood Act was signed by President James Monroe on March 15, 1820, allowing Maine to join the Union as a free state.

2. On February 22, 1968, the United States Navy submarine USS Scorpion sank in the Atlantic Ocean with 99 crew members on board. The cause of the sinking is still debated today, but it is believed that the submarine may have had electrical or mechanical problems that caused it to sink.

3. In 1732, the town of Cape Elizabeth, Maine was incorporated. Located just south of Portland, Cape Elizabeth is known for its stunning coastline and historic lighthouses, including Portland Head Light and Two Lights State Park.

4. On February 22, 1915, the city of Biddeford, Maine suffered a devastating fire that destroyed much of the downtown area. Despite the efforts of firefighters from several nearby towns, the fire raged for several hours, causing millions of dollars in damage.

5. In 1865, the United States Congress passed the Thirteenth Amendment to the Constitution, officially abolishing slavery in the United States. Although Maine had abolished slavery in 1820, the Thirteenth Amendment ensured that slavery could never be reinstated in any part of the country.