Otto IV was crowned Emperor of the Holy Roman Empire by Pope Innocent III.
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The oldest natural pearl discovered off the Abu Dhabi coast was estimated to be 8,000 years old.
Apple Day started in Covent Garden, London.
The catastrophic Tragedy of Aberfan occurred in South Wales, killing many who were in a local school, mostly children.
The first radio message to go across the Atlantic Ocean was sent from Virginia to Paris.
English chemist John Dalton read his first atomic theory paper to the Manchester Literary and Philosophical society.