1610: Galileo Galilei discovers the first three moons of Jupiter: Io, Europa & Ganymede
1714: Typewriter patented by Englishman Henry Mill (built years later)
1941: Chinese Kuomintang forces under orders from Chiang Kai-shek open fire on the surrounded Communist New Fourth Army at Maolin, Anhui Province, killing or capturing 7,000 troops
1953: US President Harry Truman announces American development of the hydrogen bomb
1954: Georgetown-IBM experiment, 1st public demonstration of a machine translation system, is held at IBM’s head office in New York
1999: President Bill Clinton’s impeachment trial begins in the US Senate after the House voted to impeach him for lying about his affair with Monica Lewinsky
Source: Onthisday.com
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