Leo II was crowned Emperor of Rome at just seven years of age.
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The plans to construct the World Trade Center in New York City were announced to the public.
The lie detector, invented in 1921 by John Augustus Larson, was first used in the Netherlands.
Microsoft announced its plans to acquire Activision Blizzard for $68.7 billion.
The final episode of Monty Python's 'Flying Circus' season 3 was aired on BBC.
The first polar bear in America was exhibited in Boston.
