Treaty of Brest-Litovsk (March 3rd 1918). Between Russia and the Central Powers.

Treaty of Bucharest (May 7th 1918). Between Romania and the Central Powers.

Treaty of Versailles (June 28th 1919). Between Germany and the Allies.

Treaty of Saint-Germain-en-Laye (September 10th 1919). Between Austria and the Allies.

Treaty of Neuilly-sur-Seine (November 27th 1919). Between Bulgaria and the Allies.

Treaty of Trianon (June 4th 1920). Between Hungary and the Allies.

Treaty of Sèvres (August 10th 1920). Between the Ottoman Empire (Turkey) and the Allies.

Treaty of Riga (March 18th 1921). Between Russia and Poland.

Treaty USA - Germany, Austria and Hungary (August 1921). Between Germany, Austria and Hungary and the USA.

Treaty of Lausanne (July 24th 1923). Between Turkey and the Allies + Greece.