- Apr 4 Congress decides on the US flag: 13 red & white stripes & 20 stars
Victory in Battle
Apr 5 In the Battle of Maipú, Chile's independence movement - led by Bernardo O'Higgins and José de San Martín - win a decisive victory over Spain, leaving 2,000 Spaniards and 1,000 Chilean patriots dead.
José de San Martín
Victory in Battle
Apr 7 General Andrew Jackson conquers St Marks, Florida from Seminole indians
Andrew Jackson
Event of Interest
Apr 20 Napoleon Bonaparte bids emotional farewell to his old guard at Palace of Fontainebleau
Napoléon Bonaparte
- Apr 21 Franz Grillparzer's "Sappho" premieres in Vienna
Event of Interest
Apr 28 US President James Monroe proclaims naval disarmament on Great Lakes and Lake Champlain
James Monroe