1. On November 18, 1900, the first international subway opened in Boston, connecting the city's Park Street Station and the nearby Boston Common. Although the subway did not penetrate into Connecticut, it had a significant impact on the state by demonstrating the potential of urban mass transit systems.

2. November 18, 1929, marked the birth of Connecticut native and NFL player Don Colo. Born in Stamford, Colo played for the Cleveland Browns and the Baltimore Colts, earning two Pro Bowl selections and one All-Pro nod during his career.

3. On November 18, 1956, the Great Fog of 1956 descended on Connecticut, shrouding the state in a thick blanket of fog for several days. The fog disrupted transportation and caused widespread power outages, leading to increased awareness of the need for improved weather forecasting and communication infrastructure.

4. November 18, 1985, saw the dedication of the Mark Twain House and Museum in Hartford, Connecticut. Located in the home where the celebrated author lived for nearly 20 years, the museum remains a popular destination for literary enthusiasts and history buffs alike.

5. Finally, on November 18, 1997, the University of Connecticut women's basketball team won its 34th game in a row, setting a new NCAA women's basketball record for consecutive victories. The streak continued for another 31 games, ending with a loss in the 1998 NCAA Tournament.