Grace Kelly married Rainier III, the Prince of Monaco.
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NASA's Ingenuity helicopter became the first helicopter to fly on another planet.
The town of Chartres in France surrendered to King Henry IV.
Charles Darwin, who taught the world the theory of evolution by natural selection, died at 73 years old.
Cardinal Joseph Ratzinger was elected as Pope under the name Pope Benedict XVI.
Johnny Cash released his 'Ring of Fire' single.
