![Political map of Europe 10 Sep 1919 (Treaty of St. Germain): The [Treaty_of_Saint-Germain-en-Laye_(1919)|Peace Treaty with Austria] was signed on September 10, 1919. The [Allies_of_World_War_I|Allies] recognized the independence of Czechoslovakia, the merging of Serbia with the southern Slavic nations to form Yugoslavia, and the expansion of Poland into former Austrian territory. Austria was also forbidden from [Anschluss|uniting with Germany], something it had attempted to do after the war. The treaty with Hungary, the other part of [Austria-Hungary|Austria_Hungary], was postponed by [Hungarian-Romanian_War_of_1919|the outbreak of its war with Romania].](/assets/img/maps/europe/europe19190910.png)
The Peace Treaty with Austria was signed on September 10, 1919. The Allies recognized the independence of Czechoslovakia, the merging of Serbia with the southern Slavic nations to form Yugoslavia, and the expansion of Poland into former Austrian territory. Austria was also forbidden from uniting with Germany, something it had attempted to do after the war. The treaty with Hungary, the other part of Austria_Hungary, was postponed by the outbreak of its war with Romania.