1. On July 7, 1846, Maine became the first state in the nation to pass a law prohibiting the sale of alcohol. This law, known as the "Maine Law," was a landmark in the temperance movement and would set the stage for the national prohibition of alcohol nearly 70 years later.

2. On July 7, 1887, the first long-distance telephone line in Maine was completed between Boston and Portland. This allowed Mainers to communicate with people outside of their immediate area for the first time, and paved the way for the modern telecommunications industry.

3. July 7, 1932 marked the opening of the Penobscot Narrows Bridge in Maine. At the time, it was the longest bridge in the state and one of the longest suspension bridges in the world. Today, it remains an engineering marvel and popular tourist attraction.

4. On July 7, 1986, the Maine Turnpike Authority began operating the first EZ Pass electronic toll collection system in the country. This system would revolutionize toll collection nationwide and ultimately save countless hours for millions of commuters.

5. Finally, on July 7, 2014, Maine became the third state in the country to legalize same-sex marriage. This historic milestone was the result of years of activism and advocacy by LGBT groups in the state, and signaled a major shift in the national conversation around marriage equality.