The FDA approved the first chickenpox vaccine.
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Saint Patrick was captured by Irish raiders from his home in Britain and taken to be a slave in Ireland.
Pop singer-songwriter Sia released her hit single 'Chandelier.'
The Bee Gees made their first appearance on TV, performing 'Words' and 'To Love Somebody' on the Ed Sullivan Show.
The UK, the Netherlands, Belgium, Luxembourg, and France signed the Treaty of Brussels.
Albert Einstein wrote his first paper on the Quantum Theory of Light.
