The Austro-Hungarian Empire, Austro-Hungarian Monarchy or simply Austria-Hungary, was a European state created in 1867 after the so-called Austro-Hungarian Compromise, by which it recognized the Kingdom of Hungary as an autonomous entity within the Austrian Empire. Since then the Austro-Hungarian Empire was called because of equality between both states. The official name of the Empire is transcribed as: 'Realms and Territories Imperial represented in the Council and the Territories of the Hungarian Holy Crown of St. Stephen' governed by Budapest-Vienna.
The sovereign ruled as Emperor of Austria on the west and north, the Cisleitania call and as King of Hungary on the Transleitania. There was no common citizenship and a single passport for citizens of the Empire that could be Austrian or Hungarian, but not both.
In 1914, on the eve of the First World War that would lead to its dissolution, he had an area of 675,936 square kilometers, had 52,799,000 inhabitants and was considered as one of the great European powers.
The territories of the defunct Austro-Hungarian Empire now comprise thirteen European countries: Austria, Hungary, Czech Republic, Slovakia, Slovenia, Croatia, Bosnia and Herzegovina other regions of Vojvodina and Western Banat in Serbia, Kotor Bay in Montenegro, Trentino -High Adige and Trieste in Italy, Transylvania, Banat Eastern and Bucovina in Romania, the western part of Galicia and Silesia in Poland and eastern Galicia and the Transcarpathian Ruthenia in Ukraine.