The Balmis Expedition began in Spain. It's considered the first international healthcare expedition in history.
English chemist John Dalton read his first atomic theory paper to the Manchester Literary and Philosophical society.
The United States ratified the Louisiana Purchase.
Inventor Robert Fulton tested his 66-foot long boat on River Seine in Paris, France.
President Thomas Jefferson announced the Louisiana Purchase to the public.
British explorer Matthew Flinders became the first person to successfully circumnavigate Australia.
Britain declared war on France after Napoleon Bonaparte continued interfering in Italy and Switzerland.
The USA signed The Louisiana Purchase in Paris.
A meteorite shower caused thousands of meteor fragments to fall in L'Aigle, France.
Ohio became the 17th state to join the United States of America.
The US Supreme Court ruled it would be the final interpreter of all constitutional issues.
