Wikimedia Commons has media related to 1804. 1804 (MDCCCIV) was a leap year starting on Sunday of the Gregorian calendar and a leap year starting on Friday...

The 1804 United States presidential election was the fifth quadrennial presidential election, held from Friday, November 2, to Wednesday, December 5, 1804...

The 1804 dollar or Bowed Liberty Dollar was a dollar coin struck by the United States Mint, of which fifteen specimens are currently known to exist. Though...

as the Empire of Austria, was a multinational European great power from 1804 to 1867, created by proclamation out of the realms of the Habsburgs. During...

continental Europe at the beginning of the 19th century. It lasted from 18 May 1804 to 3 May 1814 and again briefly from 20 March 1815 to 7 July 1815, when Napoleon...

The 1804 Haiti massacre, sometimes referred to as the Haitian genocide, was carried out by Afro-Haitian soldiers, mostly former slaves, under orders from...

American Revolutions: A Continental History, 1750–1804 is a 2016 history book by Alan Taylor. Bothwell, Robert (2018). "Review of The Divided Ground: Indians...

First Republic lasted until the declaration of the First Empire on 18 May 1804 under Napoléon Bonaparte, although the form of government changed several...

The 1804–05 United States Senate elections were held on various dates in various states. As these U.S. Senate elections were prior to the ratification...

The Russo-Persian War of 1804–1813 was one of the many wars between the Persian Empire and Imperial Russia, and, like many of their other conflicts, began...