1. In 1676, the Great Swamp Fight took place in Rhode Island, which was a major battle of King Philip's War. The battle was fought between the English colonists and the Wampanoag tribe, and the Maine militia played a significant role in it.

2. On September 5, 1864, the Civil War Battle of Mobile Bay, one of the most significant naval battles of the war, ended. The Union forces under the command of Admiral David Farragut captured the Confederate-held port of Mobile, Alabama, which was a major source of revenue for the South.

3. In 1877, lumber baron David Pingree became the 42nd governor of Maine. Pingree, who made his fortune in forestry, was in office during a time of economic growth in the state, and he worked to improve the state's infrastructure, establish a state school of agriculture, and modernize the state's banking system.

4. In 1936, the Great Maine Moxie Festival was established in Lisbon Falls. Moxie, a soft drink that is unique to Maine, was first developed in the state in 1884, and the festival celebrates the drink's legacy with events like a parade, a Moxie chugging contest, and a Moxie recipe contest.

5. On September 5, 1992, the Penobscot Narrows Bridge and Observatory, which spans the Penobscot River between Verona and Prospect, opened to the public. The bridge is one of the tallest in Maine, and the observatory at the top of the bridge's towers offers stunning views of the surrounding area.