-
The Treaty of Saint-German-en-Laye
"Treaty of Saint-Germain, (1919), treaty concluding World War I and signed by representatives of Austria on one side and the Allied Powers on the other. It was signed at Saint-Germain-en-Laye, near Paris, on Sept. 10, 1919, and came into force on July 16, 1920."
(https://www.britannica.com/event/Treaty-of-Saint-Germain)