Births on October 6

Heinrich Wilhelm Dove, Polish-German physicist and meteorologist (d. 1879)

Heinrich Wilhelm Dove (6 October 1803 – 4 April 1879) was a Prussian physicist and meteorologist.

18 May

Treaty of Amiens
Napoleonic Wars: The United Kingdom revokes the Treaty of Amiens and declares war on France.
23 Sep

Battle of Assaye
Second Anglo-Maratha War: Battle of Assaye between the British East India Company and the Maratha Empire in India.
20 Oct

Louisiana Purchase
The United States Senate ratifies the Louisiana Purchase.