* Henry Austin ( architect ) ( 1804 – 1891 ), American architect

* 1857 – Eugène Sue, French novelist ( b. 1804 )

* 1866 – Gábor Klauzál, Hungarian politician ( b. 1804 )

Aga Khan I (; or, less commonly but more correctly (; ), was the title accorded to Hasan Ali Shah (; ; 1804 in Kohak, Iran – 1881 in Bombay, India ), the governor of Kirman, 46th Imam of the Nizari Ismaili Muslims, and prominent Muslim leader in Iran and later in the Indian Subcontinent.

Theseus Fighting the Centaur ( 1804 – 1819 ), Kunsthistorisches Museum, Vienna.

* 1804 – Francis II assumes the title of first Emperor of Austria.

* 1804 – High Possil Meteorite: The first recorded meteorite in Scotland falls in Possil.

At his memorial service on 22 June 1825 his own Requiem in C minor — composed in 1804 – was performed for the first time.

* 1804 – The western Georgian kingdom of Imereti accepts the suzerainty of the Russian Empire

* 1804 – Toussaint Louverture, Haitian Revolutionary ( b. 1743 )

* 1885 – Karl Theodor Ernst von Siebold, German physiologist ( b. 1804 )

" Migration, Radicalism, and State Security: Legislative Initiatives in the Canada and the United States c. 1794 – 1804 " in Studies in American Political Development, Volume 16, Issue 1, April 2002, 48 – 60

The term acquired a special significance in the philosophy of Immanuel Kant ( 1724 – 1804 ), who used it to describe the equally rational but contradictory results of applying to the universe of pure thought the categories or criteria of reason that are proper to the universe of sensible perception or experience ( phenomena ).

Benjamin Disraeli, 1st Earl of Beaconsfield, KG, PC, FRS, ( 21 December 1804 – 19 April 1881 ) was a British Prime Minister, parliamentarian, Conservative statesman and literary figure.

He was crowned Emperor of the French and ruled from 1804 – 1814, 1815.

* Napoleon I ( 1804 – 1814, 1815 ), also King of Italy ( 1805 – 1814 ) and Emperor in Elba ( 1814 – 1815 )

#** Laetitia Christine Bonaparte ( 1804 – 1871 )

#* Napoleon Louis Bonaparte ( 1804 – 1831 )

* Napoleon Bonaparte ( First Consul ), Jean-Jacques Cambacérès ( Second Consul ), Charles-François Lebrun ( Third Consul ), Consuls ( 12 December 1799 – 18 May 1804 )

The current resistance to Russian rule has its roots in the late 18th century ( 1785 – 1791 ), a period when Russia expanded into territories formerly under the dominion of Turkey and Persia ( see also the Russo-Turkish Wars and Russo-Persian War ( 1804 – 1813 )), under Mansur Ushurma — a Chechen Naqshbandi ( Sufi ) Sheikh — with wavering support from other North Caucasian tribes.

In 1842 Charlotte and Emily travelled to Brussels to enrol in a boarding school run by Constantin Heger ( 1809 – 96 ) and his wife Claire Zoé Parent Heger ( 1804 – 87 ).

In 1804 the first volume of his Organic Remains of a Former World was published.

In the United States, all the northern states had abolished the institution of slavery between 1777 and 1804, although southern states clung tightly to the " peculiar institution ".

On May 1, 1804, the first group of emigrants departed for the United States.

In 1804, while Rapp and his associates remained in the United States looking for a place to settle, his followers sailed to America aboard several vessels and made their way to western Pennsylvania, where they waited until land had been selected for their new settlement.

* One Justice of the Supreme Court of the United States, Samuel Chase in 1804.

* 1755 – Alexander Hamilton, Nevis born American Founding Father, economist, and political philosopher ; 1st United States Secretary of the Treasury ( d. 1804 )

* 1804 – A duel occurs in which the Vice President of the United States Aaron Burr mortally wounds former Secretary of the Treasury Alexander Hamilton.

* 1804 – New Hampshire approves the Twelfth Amendment to the United States Constitution, ratifying the document.

The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition ( 1804 – 1806 ), was the first transcontinental expedition to the Pacific coast undertaken by the United States.

Category: 1804 in the United States

Ceremony at Jackson Square, New Orleans | Place d ' Armes, New Orleans marking transfer of Louisiana to the United States, 10 March 1804, as depicted by Thure de Thulstrup.

On March 10, 1804, a formal ceremony was conducted in St. Louis to transfer ownership of the territory from France to the United States.

In early 1804, Congress passed the Mobile Act which recognized West Florida as being part of the United States.

The United States adapted the former Spanish facility at Fort Bellefontaine as a fur trading post near St. Louis in 1804 for business with the Sauk and Fox.

* 1804 – Louisiana Purchase: In St. Louis, Missouri, a formal ceremony is conducted to transfer ownership of the Louisiana Territory from France to the United States.

* 1804 – The Democratic-Republican-controlled United States Senate begins an impeachment trial against Federalist-partisan Supreme Court of the United States Justice Samuel Chase.

* 1804 – Franklin Pierce, 14th President of the United States ( d. 1869 )

Category: 1804 in the United States

* April 19 – Benjamin Disraeli, Prime Minister of the United Kingdom ( b. 1804 )

* October 8 – Franklin Pierce, 14th President of the United States ( b. 1804 )

Richard Somers ( 1778 or 1779 – 4 September 1804 ) was an officer of the United States Navy, killed during a daring assault on Tripoli.

To rectify the flaw in the original presidential election mechanism, the Twelfth Amendment, ratified in 1804, was added to the United States Constitution, stipulating that electors make a discrete choice between their selections for president and vice-president.

The United States presidential election of 1804 pitted incumbent Democratic-Republican President Thomas Jefferson against Federalist Charles Cotesworth Pinckney.