Source: HistoryNet.com
1799: George Washington dies on his Mount Vernon estate.
1900: Max Planck presents the quantum theory at the Physics Society in Berlin.
1911: Roald Amundsen and four others discover the South Pole.
1946: The United Nations adopt a disarmament resolution prohibiting the A-Bomb.
1948: Supreme Court of Canada lifts margarine ban.
1968: FLQ terrorists plant three bombs in Montréal; two disarmed, one explodes.
1994: Construction begins on China's Three Gorges Dam on the Yangtze River.
2004: The Millau Viaduct, the world's tallest bridge, official opens near Millau, France.
2012: At Sandy Hook Elementary School, Newtown, Conn., 20 children and six adults are shot to death by a 20-year-old gunman who then commits suicide.