The Austro-Hungarian Realm

The Austro-Hungarian empire was formed 1867 with The compromise of 1867 as a desperate attempt for Reform in the Austrian empire, seeing the state split into a Hungarian and Austrian half, the empire was ethnically diverse and would have constant revolts and general unrest. In 1914 the heir to the throne Franz Ferdinand was shot in a military parade in Sarajevo by Gavrilo Princip, causing Austria-Hungary to accuse Serbia of the assassination and declaring war following the July Crisis. This would cause Russia to declare war in the protection of Serbia along with France, with the German Empire having an IOU to Austria-Hungary joined the war despite being related to the Russian royal family starting World War I, Austria lost the war and got dismantled so that it could never be formed again, with lands going to Italy and Poland as well as Romania, the newly formed Yugoslavia, Austria, Czechoslovakia, and Hungary.

National Anthem of Austria-Hungary: Gott erhalte, Gott beschütze

Version 1: https://youtu.be/QDUI6OvONEM

Version 2: https://www.youtube.com/watch?v=YQKZyBwCsAU&t=0s