What is imperio austrohungaro?

The Austro-Hungarian Empire was a dual monarchy that existed from 1867 to 1918. It was formed by the union of the Austrian Empire and the Kingdom of Hungary, and included various other territories and ethnic groups. The empire was ruled by a monarch, with separate governments for Austria and Hungary. The empire faced challenges from nationalist movements among its various ethnic groups, as well as military defeats in World War I. It ultimately dissolved after the war, with its territories being divided among the victorious powers.