Article

Key historical events include: In 1610, Galileo Galilei discovered three moons of Jupiter: Io, Europa, and Ganymede. In 1714, Henry Mill patented the typewriter. The New Fourth Army Incident occurred in 1941 when Chinese Kuomintang forces attacked the Communist New Fourth Army in Anhui Province, resulting in 7,000 casualties.

In 1953, U.S. President Harry Truman announced the development of the hydrogen bomb. A significant machine translation demonstration by IBM took place in 1954 at its New York headquarters.

Lastly, in 1999, President Bill Clinton's impeachment trial began in the U.S. Senate after the House voted to impeach him over his affair with Monica Lewinsky.