Map of Austria-Hungary 1900
The Austro-Hungarian Empire in English sources, was a constitutional union of the Austrian Empire (the kingdoms and lands represented in the imperial council, or Cisleithania) and the kingdom of Hungary Corona de San Esteban or Transleithania) that existed from 1867 to 1918 , When it collapsed as a result of the defeat in World War I.
The union was a result of the Austro-Hungarian Commitment of 1867 and was born on 30 March 1867. Austria-Hungary consisted of two monarchies (Austria and Hungary) and an autonomous region: the Kingdom of Croatia-Slavonia under the Hungarian crown, which Negotiated the Croat-Hungarian settlement (Nagodba) in 1868. It was ruled by the Habsburg house, and constituted the last phase in the constitutional evolution of the Habsburg monarchy.
After the reforms of 1867, the Austrian and Hungarian states were the same. Foreign affairs and the military were subject to joint supervision, but all other government powers were divided between the respective states.