Indiana Jones and the Last Crusade, directed by Steven Spielberg and produced by George Lucas, premiered.
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The first telegraph message was sent.
The United States and Russia signed the Moscow Treaty, agreeing to limit their nuclear arsenals.
Theresa May announced her resignation as British Prime Minister.
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.
