Connecticut became the 5th state to join the United States of America.
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The first commercial helicopter, Sikorsky S51, had its first test flight.
The first ballistic missile submarine was launched from Groton, Connecticut, US.
Automatic street lights first appeared in New Milford, Connecticut, US.
Sandwich restaurant Subway was founded in Bridgeport, Connecticut, US.
Adam Lanza shot and killed 20 children and 6 adults at the Sandy Hook Elementary School in Newtown, Connecticut.
