1.)The signing of the Treat of Versailles.
2.)The institution of the Selective Service Act.
3.)The signing of the Treaty of Alsace-Lorraine.
4.)The international acceptance of Wilson's Fourteen Points.
Germany had formally surrender on November 11, 1918. On the day of June 28, 1919, the Allied Nations and Germany signed the TREATY OF VERSAILLES , formally ending the war.