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.
Austria under National Socialism
In 1918, at the end of World War I, with the breakup of the multi-ethnic Austro-Hungarian Empire, and with the abolition of the Habsburg monarchy, there were three major political groups competing with one another in the young republic of Austria: the Social Democratic Party of Austria (SDAP), Christian Social Party (CS), and the nationalist Great German Union ("Großdeutsche Vereinigung"), which became the Greater German People's Party ("Großdeutsche Volkspartei", or GVP) in 1920. At the time, smaller parties such as the Communist Party of Austria ("Kommunistische Partei Österreichs", or KPÖ) and the Austrian National Socialists ("Deutsche Nationalsozialistische Arbeiterpartei", or DNSAP) were neither present in the Reichsrat (Imperial Council) nor the Nationalrat (National Council).