- Sep 4 First US religious newspaper (Religious Remembrancer (Christian Observer))
- Sep 7 "Uncle Sam" 1st used to refer to the US, by Troy Post of New York
- Sep 10 American Naval Commander Oliver Hazard Perry defeats the British in Battle of Lake Erie
Victory in Battle
Sep 30 Battle of Bárbula: Simón Bolívar defeats Santiago Bobadilla
Simón Bolívar