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.
Republic of German-Austria
With the impending collapse of the empire the 208 ethnic German deputies to the Cisleithanian Austrian parliament ("Reichsrat") elected in 1911 met on 21 October 1918 and proclaimed itself to be a "Provisional National Assembly for German-Austria" representing the ethnic Germans in all Cisleithanian lands. It elected Franz Dinghofer of the German National Movement, Jodok Fink of the Christian Social Party, and Karl Seitz of the Social Democratic Workers' Party as assembly presidents. The assembly included representatives from Bohemia, Moravia, and Austrian Silesia who refused to submit to the new state of Czechoslovakia which had been declared on 28 October 1918. It also proclaimed that "the German people in Austria are resolved to determine their own future political organization to form an independent German-Austrian state, and to regulate their relations with other nations through free agreements with them". On October 25 Provisional Assembly called on all German inhabited Lands to form their own provisional assemblies.