1. 1777: American forces suffer defeat at the Battle of Germantown, just days after taking Philadelphia. Many Connecticut soldiers fought in the battle, which was a key moment in the Revolutionary War.

2. 1839: The Hartford steam boiler explosion kills five people and causes extensive damage to buildings in the area. The explosion was a significant event in the development of safety rules for steam boilers.

3. 1884: The first electrified streetcar runs in New Haven. Connecticut was at the forefront of electrifying public transportation, and the streetcar system in New Haven was one of the most advanced and innovative in the country.

4. 1936: The first commercial television broadcast takes place in Hartford. The station, W1XAV, was owned by the radio station WDRC and broadcast for just a few hours a day.

5. 1996: The Mashantucket Pequot Museum and Research Center opens in Mashantucket. The museum showcases the history and culture of the Mashantucket Pequot Tribal Nation, which has a rich and complex history in Connecticut and the surrounding region.