Previously, although Croatia had a limited constitutional autonomy within the Kingdom of Hungary, the City of Fiume/Rijeka on the Croatian coast was governed directly from Budapest by an appointed governor as a corpus separatum, to provide Hungary with its only international port in the periods 1779–1813, 1822–1848 and 1868–1918.
Sebelumnya, meskipun Kroasia memiliki otonomi di Hongaria, Kota Fiume/Rijeka yang berada di pantai Kroasia dipimpin langsung dari Budapest oleh seorang gubernur tunjukan secara corpus separatum, untuk memberikan Hongaria pelabuhan internasionalnya pada periode 1779–1813, 1822–1848 dan 1868–1918.