1. The Battle of Machias took place on June 25, 1775, during the American Revolutionary War. A group of American patriots, led by Jeremiah O'Brien, attacked and captured a British ship, the Margaretta, marking the first naval engagement of the war.

2. On June 25, 1876, the town of Bar Harbor, Maine, was officially incorporated. Today, it is a popular tourist destination known for its stunning coastal scenery, Acadia National Park, and historic mansions.

3. The Katahdin Iron Works, a major industrial center in northern Maine, was incorporated on June 25, 1840. The company operated until the early 20th century, producing pig iron, charcoal, and lumber.

4. June 25, 1902, saw a major fire in the town of Houlton, Maine, which destroyed several businesses and homes. The fire started in a clothing store and quickly spread, fueled by strong winds. No lives were lost, but the damage was extensive.

5. On June 25, 2018, Maine became the first state in the US to use ranked-choice voting in a statewide primary election. The new voting system, in which voters rank candidates in order of preference, was also used in the general election later that year.