1806 - Explorer Zebulon Pike spotted the mountaintop that became known as Pikes Peak.
1889 - Brazil's monarchy was overthrown.
1902 - Anarchist Gennaro Rubin failed in his attempt to murder King Leopold II of Belgium.
1920 - The League of Nations met for the first time in Geneva, Switzerland.
1965 - The Soviet probe, Venera 3, was launched from Baikonur, Kazakhstan. On March 1, 1966, it became the first unmanned spacecraft to reach the surface of another planet when it crashed on Venus.
1969 - In Washington, DC, a quarter of a million protesters staged a peaceful demonstration against the Vietnam War.
1985 - Britain and Ireland signed an accord giving Dublin an official consultative role in governing Northern Ireland.
1999 - Representatives from China and the United States signed a major trade agreement that involved China's membership in the World Trade Organization (WTO).
2006 - Andy Warhol's painting of Communist Party Chairman Mao Zedong sold for $17.4 million. At the same auction "Orange Marilyn" sold for $16.2 million and "Sixteen Jackies" sold for $15.6 million.