South America, 24 Mar 1922: Salomón–Lozano Treaty
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Sep 1918–?? 1919Influenza pandemic
strikes South America

Nov 1918Germany signs
armistice with Allies,
ending World War I

Nov 1920Mexican Revolution ends

Apr 1921Columbia recognizes
Panama’s independence

Jun 1921–Feb 1922Abortive Central
American Federation

Jan 1922Brazil reserves site
for future capital