Austria
The Treaty of Saint-Germain of 1919 (for Hungary the Treaty of Trianon of 1920) confirmed and consolidated the new order of Central Europe which to a great extent had been established in November 1918, creating new states and altering others. The German-speaking parts of Austria which had been part of Austria-Hungary were reduced to a rump state named The Republic of German-Austria (German: "Republik Deutschösterreich"). The desire for "Anschluss" (annexation of Austria to Germany) was a popular opinion shared by all social circles in both Austria and Germany. On 12 November, German-Austria was declared a republic, and named Social Democrat Karl Renner as provisional chancellor. On the same day it drafted a provisional constitution that stated that "German-Austria is a democratic republic" (Article 1) and "German-Austria is an integral part of the German reich" (Article 2). The Treaty of Saint Germain and the Treaty of Versailles explicitly forbid union between Austria and Germany. The treaties also forced German-Austria to rename itself as "Republic of Austria" which consequently led to the first Austrian Republic.
Austrians
On October 21, the German members of the Austrian parliament, elected in 1911, met in Vienna to found the Provisional National Assembly of German Austria ("Provisorische Nationalversammlung für Deutschösterreich"). On October 30, 1918 they installed the first German Austrian government, leaving the question "monarchy or republic" open. (German nationalists and social democrats favoured the republic, the Christian Socialists wanted to keep the monarchy.) This government in the first days of November took over the duties of the last imperial-royal government in a peaceful way. Initially the new state adopted the name "German Austria", reflecting the republic being the German part of the old Austria and showing the popular desire to unite with the new German republic. On November 12, 1918, the provisional national assembly voted for the republic and for unification with Germany with a large majority.