1. In 1708, the Collegiate School of Connecticut, later known as Yale University, was chartered in New Haven.

2. In 1781, French and American forces under the command of General Rochambeau marched through Connecticut on their way to Yorktown, Virginia, where they played a crucial role in the American victory in the Revolutionary War.

3. In 1835, the first American temperance society was founded in Connecticut. The movement, which advocated for the abstention from alcohol, would eventually lead to the passage of prohibition laws in the United States.

4. In 1956, the Nautilus, the world's first nuclear-powered submarine, was launched in Groton, Connecticut. The vessel revolutionized naval warfare and marked a significant milestone in the Cold War arms race.

5. In 1975, the first female governor in the United States, Ella T. Grasso, was elected in Connecticut. During her time in office, she championed civil rights and women's rights, and played a key role in passing legislation related to energy conservation and environmental protection.