1917 – The current constitution of Mexico is adopted, establishing a federal republic with powers separated into independent executive, legislative, and judicial branches.
1975 – Riots break in Lima, Peru after the police forces go on strike the day before. The uprising (locally known as the Limazo) is bloodily suppressed by the military dictatorship.
1985 – Ugo Vetere, then the mayor of Rome, and Chedli Klibi, then the mayor of Carthage meet in Tunis to sign a treaty of friendship officially ending the Third Punic War which lasted 2,131 years.