- May 6 Suriname sold to Great Britain (until Feb 1816)
Appointment of Interest
May 10 British Prime Minister Henry Addington resigns, replaced by William Pitt the Younger

William Pitt the Younger

Henry Addington
Historic Expedition
May 14 Meriwether Lewis and William Clark's expedition commissioned by Thomas Jefferson sets out from St Louis for Pacific Coast

Meriwether Lewis

Thomas Jefferson

William Clark

Napoléon Bonaparte