1800: Meaning (information, definition, explanation, facts)

Events

• March 14 - Cardinal Barnaba Chiaramonti is elected pope Pius VII
• March 21 - Pius VII becomes Pope
• April 24 - US Library of Congress founded
• May 15 - Napoleon Bonaparte crosses the Alps and invades Italy
• June 14 - Battle of Marengo, Napoleon defeats the Austrian troops near Marengo, Italy.
• June 2 - First smallpox vaccination in North America, at Trinity, Newfoundland.
• June 27 - Pascha Jussuf Karamanli of Tripoli declares war on Sweden by having the flagpole on the consulate chopped down.
• September 5 - The island of Malta, that was occupied by the French, is conquered by British troops
• November 1 - US President John Adams becomes the first President of the United States to live in the Executive Mansion (later renamed the White House).
• November 17 - The United States Congress holds its first Washington, DC session.
• December 3 - Battle of Hohenlinden, the French army defeats the Austrian troops.
• December 24 - An assault on Napoleon Bonaparte fails in Paris
• Invention of the voltaic pile by Alessandro Volta: the first chemical battery
• The infrared radiation is discovered by Wilhelm Herschel

Ongoing events

• French Revolutionary Wars (1792-1802)-Second Coalition/Egyptian Campaign
• Napoleonic Wars (1799-1815)-Second Coalition/Egyptian Campaign

• January 7 - Millard Fillmore, 13th President of the United States 1850-1853
• February 11 - William Henry Fox Talbot, English photographic pioneer
• March 15 - Heinrich von Dechsen, geologist and mineralogist (d. 1889)
• May 9 - John Brown, American abolitionist (d. 1859)
• July 31 - Friedrich Wöhler, German chemist
• August 22 - William S. Harney, US general
• October 2 - Nat Turner, leader of a slave rebellion
• December 3 - France Prešeren, Slovenian poet
• Charles Goodyear, American rubber magnate
• Emperor Ninko of Japan

• January 1 - Louis-Jean-Marie Daubenton, French naturalist
• March 14 - Daines Barrington, English naturalist