1806 events in history

Jan 1 The French Republican Calendar is abolished
Jan 8 Cape Colony becomes a British colony
Jan 9 Admiral Horatio Lord Nelson receives a state funeral and is interred in St Paul's Cathedral
Jan 10 Dutch settlers in Cape Town surrender to the British
Jan 19 The United Kingdom occupies the Cape of Good Hope
Jan 30 The original Lower Trenton Bridge (also called the Trenton Makes the World Takes Bridge), which spans the Delaware River between Morrisville, Pennsylvania and Trenton, New Jersey, is opened
Feb 6 Battle of San Domingo: British naval victory against the French in the Caribbean
Mar 23 After traveling through the Louisiana Purchase and reaching the Pacific Ocean, explorers Lewis and Clark and their "Corps of Discovery" begin their arduous journey home
Mar 29 Construction is authorized of the Great National Pike, better known as the Cumberland Road, becoming the first United States federal highway
Apr 21 Action of 21 April 1806: A French frigate escapes British forces off the coast of South Africa
May 30 Future U.S. President Andrew Jackson kills Charles Dickinson in a duel after Dickinson had accused Jackson's wife of bigamy
Jun 27 British forces take Buenos Aires during the first British invasions of the Río de la Plata
Jul 10 The Vellore Mutiny is the first instance of a mutiny by Indian sepoys against the British East India Company
Jul 12 Liechtenstein is given full sovereignty after its accession to the Confederation of the Rhine
Jul 12 Sixteen German imperial states leave the Holy Roman Empire and form the Confederation of the Rhine
Jul 15 Pike expedition: United States Army Lieutenant Zebulon Pike begins an expedition from Fort Bellefontaine near St. Louis, Missouri, to explore the west
Aug 6 Francis II, the last Holy Roman Emperor, abdicates, ending the Holy Roman Empire
Aug 12 Santiago de Liniers, 1st Count of Buenos Aires re-takes the city of Buenos Aires, Argentina after the first British invasion
Aug 13 Battle of Mišar during the Serbian Revolution begins. The battle will end two days later, with a decisive Serbian victory over the Ottomans
Sep 2 A massive landslide destroys the town of Goldau, Switzerland, killing 457
Sep 23 Lewis and Clark return to St. Louis after exploring the Pacific Northwest of the United States
Oct 8 Napoleonic Wars: Forces of the British Empire lay siege to the port of Boulogne in France by using Congreve rockets, invented by Sir William Congreve
Oct 9 Prussia declares war on France
Oct 17 Former leader of the Haitian Revolution, Emperor Jacques I of Haiti is assassinated after an oppressive rule
Oct 27 The French Army enters Berlin, following the Battle of Jena–Auerstedt
Oct 30 Believing he is facing a much larger force, Prussian Lieutenant General Friedrich von Romberg, commanding 5,300 men, surrendered the city of Stettin to 800 French soldiers commanded by General Lassalle
Nov 15 Pike expedition: Lieutenant Zebulon Pike sees a distant mountain peak while near the Colorado foothills of the Rocky Mountains. (It is later named Pikes Peak.)
Dec 26 Battles of Pultusk and Golymin: Russian forces hold French forces under Napoleon