Austrians
Historically, Austrians were regarded as ethnic Germans and viewed themselves as such. Austria was part of the Holy Roman Empire and the German Confederation until the Austro-Prussian war in 1866 which resulted in Prussia expelling Austria from the Confederation. Thus, when Germany was founded as a nation-state in 1871, Austria was not a part of it. In 1867, Austria was reformed into the Austro-Hungarian Empire. After the collapse of the Austro-Hungarian Empire in 1918 at the end of World War I, Austria was reduced to a rump state and adopted and briefly used the name the Republic of German-Austria ("Republik Deutschösterreich") in an attempt for union with the Republic of Germany, but was forbidden due to the Treaty of Saint-Germain-en-Laye (1919). The First Austrian Republic was founded in 1919. The Third Reich annexed Austria with the "Anschluss" in 1938.
German nationalism in Austria
After the end of the First World War, which saw the collapse of the Austro-Hungarian Empire, German-speaking parts of the former Empire established a new republic under the name "German Austria" (). The republic was proclaimed on the principle of self-determination, which had been enshrined within American president Woodrow Wilson's "Fourteen Points". A provisional national assembly was convened on 11 November, at which the Republic of German Austria was proclaimed. The assembly drafted a constitution that stated that "German Austria is a democratic republic" (Article 1) and "German Austria is a component of the German Republic" (Article 2). This phrase referenced the establishment of the Weimar Republic in the former lands of the German Empire, and intended to unite German-speaking Austrians with the German nation-state, completing the Greater Germany plan. Plebiscites held in Tyrol and Salzburg yielded majorities of 98% and 99% respectively in favour of unification with Germany.