Austria-Hungary

Austria-Hungary, officially known as the Austro-Hungarian Monarchy, was a multi-national constitutional dual empire in Central Europe that existed between 1867 and 1918. Formed by the Austro-Hungarian Compromise of 1867, it was a military and diplomatic alliance consisting of two sovereign states, Austria and Hungary, under a single monarch who held the titles of Emperor of Austria and Apostolic King of Hungary. It was one of Europe's major powers, the second-largest country in area and third-most populous in Europe. The empire was dissolved in 1918 at the end of World War I, shortly after Hungary terminated its union with Austria.