A special factor of the spatial history of the Hungarian state is its former seaport of Fiume, which used to be the gateway of the Kingdom of Hungary to the Adriatic from the time of the Austro-Hungarian Compromise until World War I. This port played an essential role in the contemporary Hungarian economy as it became an independent industrial center, one of the most important industrial cities of the Monarchy. The initial boost and then flourishing of Fiume in the second half of the 19th century was due to strategictransportation and economic policies. The improvement of the transportation routes crossing the mountains that isolate the city from the main area of Hungary increased the importance of Fiume and its surr...