What is July 23?
{{calendar}} {{day}} == Events == === Up to 1900 === * [[811]] &ndash; [[Byzantine Emperor]] [[Nikephoros I]] plunders the [[Bulgaria]]n city of Pliska and captures Khan Krum's [[treasure]]. * [[1148]] &ndash; [[Crusades]]: A Crusader army starts a [[Siege of Damascus (1148)|siege of Damascus]], lasting until [[July 28]]. * [[1793]] &ndash; The [[Kingdom of Prussia]] re–conquers [[Mainz]] from [[France]]. * [[1632]] &ndash; 300 colonists leave for New France from [[Dieppe]], [[France]]. * [[1677]] &ndash; [[Scanian War]]: [[Denmark-Norway]] captures the harbour town of [[Marstrand]] from [[Sweden]] * [[1783]] &ndash; [[Prussia]] re–conquers [[Mainz]] from [[France]]. * [[1829]] &ndash; In the [[United States]], [[William Austin Burt]] [[patent]]s the typographer, a precursor of the [[typewriter]]. * [[1840]] &ndash; The Province of [[Canada]] is created in an Act of Union. * [[1862]] &ndash; [[American Civil War]]: [[Henry Halleck]] takes command of the [[Union Army]]. * [[1871]] &ndash; [[Austria-Hungary]] decides to use the [[metric system]]. The change becomes effective on [[January 1]], [[1876]]. * [[1881]] &ndash; [[Chile]] and [[Argentina]] agree on their territories in [[Tierra del Fuego]] and [[Patagonia]]. === 1901 &ndash; 2000 === * [[1903]] &ndash; The [[Ford Motor Company]] sells its first car. * [[1914]] &ndash; [[World War I]]: [[Austria-Hungary]] issues an ultimatum to [[Serbia]], demanding Serbia to allow the [[Austria]]ns to determine who assassinated [[Archduke Franz Ferdinand of Austria|Archduke Franz Ferdinand]]. Serbia does not meet Austria–Hungary's terms and war is declared on [[July 28]]. *[[1921]] &ndash; The [[Communist Party of China]] (CPC) launched the first time of Chinese [[National Congress]], [[Communist party]] in China are established.<ref>[http://www.chinatoday.com/org/cpc/cpc_1st_congress_standing_polibureau.htm 1st. National Congress of The Communist Party of China (CPC).]</ref> * [[1927]] &ndash; The first station of the [[Indian Broadcasting Company]] goes on the air in [