1637    Pequot War: A combined Protestant and Mohegan force under English Captain John Mason attacks a Pequot village in Connecticut, massacring approximately 500 Native Americans.

1639    The "Fundamental Orders", the first written constitution that created a government, is adopted in Connecticut.

1788    Connecticut becomes the fifth state to be admitted to the United States.

1983    The Mianus River Bridge collapses over the Mianus River in Connecticut, killing 3 drivers in their vehicles.