Cisleithania, officially The Kingdoms and Lands Represented in the Imperial Council, (German: Die im Reichsrat vertretenen Königreiche und Länder) was the northern and western part of Austria-Hungary, the Dual Monarchy created in the Compromise of 1867—as distinguished from Transleithania (i.e., the Hungarian Lands of the Crown of Saint Stephen east of ["beyond"] the Leitha River). This name for the region was a common, but unofficial one.