Leo II was crowned Emperor of Rome at just seven years of age.
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Charity song 'That's What Friends Are For' hit No. 1 on the Billboard Hot 100.
The Paris Peace Conference began in France.
NASA's Columbia Space Shuttle completed mission STS-61-C when it landed at the Edwards Air Force Base.
Massachusetts's Marconi Wireless Station Site successfully sent the first radio transmission between the US and Europe.
Microsoft announced its plans to acquire Activision Blizzard for $68.7 billion.
