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.
History of Austria
Although the Treaty of Versailles and the Treaty of St. Germain had explicitly forbidden the unification of Austria and Germany, the native Austrian Hitler was vastly striving to annex Austria during the late 1930s, which was fiercely resisted by the Austrian Schuschnigg dictatorship. When the conflict was escalating in early 1938, Chancellor Schuschnigg announced a plebiscite on the issue on 9 March, which was to take place on 13 March. On 12 March, "German troops entered Austria", who met celebrating crowds, in order to install Nazi puppet Arthur Seyss-Inquart as Chancellor. With a Nazi administration already in place the country was now integrated into the Third Reich and renamed as "Ostmark" until 1942, when it was renamed again as "Alpen-und Donau-Reichsgaue" ("Alpine and Danubian Gaue"). A rigged referendum on 10 April was used to demonstrate the alleged approval of the annexation with a majority of 99.73% for the annexation.