🕰️ Year
What Happened in 1803 — Events, Births & Deaths
1803 brings together 6 events, 0 birthdays and 0 deaths recorded across history.
September 1
- September 23
Second Anglo-Maratha War: The Battle of Assaye is fought between the British East India Company and the Maratha Empire in India.
October 1
- October 20
The United States Senate ratifies the Louisiana Purchase.
November 2
- November 30
The Balmis Expedition starts in Spain with the aim of vaccinating millions against smallpox in Spanish America and Philippines.
- November 30
In New Orleans, Spanish representatives officially transfer the Louisiana Territory to the French First Republic.
December 2
- December 6
Five French warships attempting to escape the Royal Naval blockade of Saint-Domingue are all seized by British warships, signifying the end of the Haitian Revolution.
- December 20
The Louisiana Purchase is completed at a ceremony in New Orleans.