The Christian Social Party was a major conservative political party in the Cisleithanian crown lands of Austria-Hungary and under the First Austrian Republic, from 1891 to 1934. The party was affiliated with Austrian nationalism that sought to keep Catholic Austria out of the State of Germany founded in 1871, which it viewed as Protestant and Prussian-dominated; it identified Austrians on the basis of their predominantly Catholic religious identity as opposed to the predominantly Protestant religious identity of the Prussians.

Austria-Hungary, often referred to as the Austro-Hungarian Empire or the Dual Monarchy, was a multi-national constitutional monarchy in Central Europe between 1867 and 1918. Austria-Hungary was a military and diplomatic alliance of two sovereign states with a single monarch who was titled both emperor of Austria and King of Hungary. Austria-Hungary constituted the last phase in the constitutional evolution of the Habsburg monarchy: it was formed with the Austro-Hungarian Compromise of 1867 in the aftermath of the Austro-Prussian War and was dissolved shortly after Hungary terminated the union with Austria on 31 October 1918.