1. Maine became a state on April 16, 1820. It was the 23rd state to be admitted into the Union, and its statehood was the result of the Missouri Compromise, which aimed to balance the number of free and slave states.

2. On April 16, 1862, during the Civil War, the Battle of Fort Pulaski took place in Georgia. Maine soldiers played a significant role in this battle, which resulted in a Union victory and helped to establish the Union Army's superiority in siege warfare.

3. In 1962, on April 16, the famous Maine-built schooner, the Bowdoin, sailed to Cuba as part of a cultural exchange program. This historic voyage was the first time an American vessel had sailed to Cuba since Fidel Castro came to power.

4. On April 16, 1986, the Maine Legislature passed a bill allowing the restoration of capital punishment for certain crimes. Maine had abolished the death penalty in 1887, and the law remained on the books until 2019 when a bill was signed into law abolishing the penalty.

5. On April 16, 2013, the city of Bangor, Maine, welcomed its first direct flight from New York City's LaGuardia Airport. The flight was operated by US Airways, and its arrival marked the start of increased air service between the two cities.