(191920) Meeting that inaugurated the international settlement after World War I .
It opened on Jan. 12, 1919, with representatives from more than 30 countries. The principal delegates were France's Georges Clemenceau , Britain's David Lloyd George , the U.S.'s Woodrow Wilson , and Italy's Vittorio Emanuele Orlando , who with their foreign ministers formed a Supreme Council. Commissions were appointed to study specific financial and territorial questions, including reparations . The major products of the conference were the League of Nations ; the Treaty of Versailles , presented to Germany; the Treaty of Saint-Germain , presented to Austria; and the Treaty of Neuilly , presented to Bulgaria. The inauguration of the League of Nations on Jan. 16, 1920, brought the conference to a close. Treaties were subsequently concluded with Hungary (Treaty of Trianon , 1920) and Turkey (Treaties of Sèvres , 1920, and Lausanne , 1923).