The plans to construct the World Trade Center in New York City were announced to the public.
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The lie detector, invented in 1921 by John Augustus Larson, was first used in the Netherlands.
Captain James Cook became the first European to travel to the Hawaiian islands.
Massachusetts's Marconi Wireless Station Site successfully sent the first radio transmission between the US and Europe.
The Paris Peace Conference began in France.
Leo II was crowned Emperor of Rome at just seven years of age.