What Happened in 1803
3 historical events, 3 notable births, and 0 notable deaths in 1803.
Major Events
January 1803
general
1803 — calendar year
April 1803
general
Louisiana Purchase — 1803 acquisition by the U.S. of France's claim to the territory of Louisiana
May 1803
war
Treaty of Amiens — 1802 Treaty during the War of the Second Coalition