Transleithanian
Transleithanian refers to the lands of the Hungarian-dominated portion of Austria-Hungary. The term originates from the Leitha River, which formed part of the border between the Austrian and Hungarian halves of the Dual Monarchy. After the Austro-Hungarian Compromise of 1867, the Austrian Empire was reorganized into Austria-Hungary, a dualistic state. Transleithania encompassed the Kingdom of Hungary, the Kingdom of Croatia-Slavonia, and the Principality of Transylvania. These territories were administered by the Hungarian government in Budapest, although Croatia-Slavonia retained a degree of autonomy. The Austrian part, Cisleithania, comprised the remaining territories of the empire. The dual monarchy existed until its dissolution in 1918 following World War I. The distinct administrative and political structures of Transleithania and Cisleithania reflected the complex internal divisions and national aspirations within the multinational empire. The concept of Transleithania highlights the significant influence and autonomy wielded by Hungary within the Habsburg realm during the latter half of its existence.