John Hancock was unanimously elected President of the Continental Congress.
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Leo Delibes' opera 'Le Roi l'a Dit' premiered in Paris at the Opéra-Comique.
Scott Carpenter orbited the Earth three times in the US Aurora 7.
Amy Johnson became the first woman to fly solo from the UK to Australia.
The United States and Russia signed the Moscow Treaty, agreeing to limit their nuclear arsenals.
The Westminster Bridge across The Thames opened in London, England.
