Here are 5 interesting facts about January 20 in Maine history:

1. In 1820, Maine became the 23rd state in the United States. The state's admission to the Union was the result of the Missouri Compromise, which allowed Maine to enter the Union as a free state and Missouri to enter as a slave state.

2. In 1853, the Bangor and Piscataquis Railroad was incorporated. The railroad was built to connect the towns of Bangor, Dover, and Foxcroft, and played an important role in the development of the region's lumber industry.

3. In 1873, Augusta native and Civil War hero Joshua Chamberlain was inaugurated as the governor of Maine. Chamberlain, who is best known for his leadership during the Battle of Gettysburg, served as governor for four one-year terms.

4. In 1925, Maine's first radio station, WCOU, began broadcasting in Lewiston. The station was owned by Central Maine Power Company and was initially used to broadcast news and music to the company's employees and customers.

5. In 2017, Portland held its annual Women's March on January 20, joining a nationwide protest against the newly inaugurated President Donald Trump. Thousands of people took to the streets of Portland to march for women's rights, social justice, and equality.