Births on September 29

Jacques Charles François Sturm, French mathematician and theorist (d. 1850)

Jacques Charles François Sturm (29 September 1803 – 15 December 1855) was a French mathematician.

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.