All Events
Napoleon sends an ill-judged message to royalist opponents when he orders the seizure and execution of the young duke of Enghien
The independence of Haiti from France is proclaimed by a new black ruler calling himself the emperor Jacques I
Richard Trevithick runs the first locomotive on rails, pulling heavy weights a distance of 9 miiles (15 km) near Merthyr Tydfil in Wales
Meriwether Lewis and William Clark set off from St Louis to explore up the Missouri river and west to the coast
Napoleon has himself proclaimed emperor of France by the Senate
The city of Hobart is founded on the southern coast of Tasmania
Beethoven changes the dedication of his third symphony on hearing that his hero, Napoleon, has made himself an emperor
Alexander Hamilton is fatally wounded by a bullet to the head in a duel with his political adversary Aaron Burr
William Blake includes his poem 'Jerusalem' in the Preface to his book Milton
Napoleon crowns himself emperor of the French in a magnificent ceremony in Notre Dame
George Rapp and his followers establish a utopian community in Pennsylvania and call it Harmony
It is estimated that in approximately 1804 the population of the world reached one billion
Napoleon has himself crowned king of Italy in the cathedral in Milan
The first barge is pulled by a horse along Thomas Telford's cast-iron canal aqueduct, high in the air at Pont Cysyllte
With advice from Thomas Daniell, Samuel Pepys Cockerell builds himself a house, Sezincote, with a roof line of fanciful Indian domes

Horatio Nelson dies on the deck of the Victory after winning the battle of Trafalgar
Napoleon enters Vienna and then defeats an Austrian and Russian army at Austerlitz
The first version of Beethoven's only opera, Fidelio, is performed in Vienna under the title Leonore
Lord Castlereagh becomes secretary of state for war in William Pitt's government
Lewis and Clark make their way through the Rockies and reach the Pacific
Walter Scott publishes The Lay of the Last Minstrel, the long romantic poem that first brings him fame
The British recapture the Cape of Good Hope from the Dutch
Francis II formally brings to an end the 1000-year-old Holy Roman Empire, to keep it from the clutches of Napoleon
Tecumseh's younger brother, Tenskwatawa, becomes known as the Shawnee Prophet
Napoleon announces that Holland is to be a kingdom, with his 28-year-old brother Louis Bonaparte on the throne