1. On October 27, 1904, the first electric trolley car was introduced in New Haven, Connecticut. The trolley car was a new mode of transportation that replaced older forms of transportation, such as horse-drawn carriages.

2. In 1814, the USS Connecticut was launched on October 27. The USS Connecticut was a 74-gun ship that was used during the War of 1812. The ship served in the Mediterranean and took part in the Battle of Algiers.

3. On October 27, 1930, the first public broadcast of an American football game took place in Hartford, Connecticut. The game was between the University of Connecticut and New Hampshire State University.

4. In 1903, the first automobile was assembled in Bridgeport, Connecticut on October 27. Connecticut played a significant role in the early automotive industry, with many companies starting in the state and the first automotive trade show being held in Hartford.

5. In 1909, the Connecticut State Library was dedicated on October 27. This library was the first public library in the state and housed a variety of important collections, including rare books, manuscripts, and historical documents related to the state's history.