Bulgaria during World War I 28 June 1914, Gavrilo Princip, a Bosnian-Serb student and member of Young Bosnia, assassinated the heir to the Austro-Hungarian throne, the Archduke Franz Ferdinand of Austria in Sarajevo, Bosnia. This began a period of diplomatic manoeuvring between Austria-Hungary, Germany, Russia, France and Britain called the July Crisis. Wanting to end Serbian interference in Bosnia conclusively, Austria-Hungary delivered the July Ultimatum to Serbia, a series of ten demands that were intentionally meant to be unacceptable in order to precipitate a war with Serbia. When Serbia acceded to only eight of the ten demands levied against it in the ultimatum, Austria-Hungary declared
Archduke Joseph Árpád of Austria 1956 and religiously on 12 September 1956 in Bronnbach, Wertheim am Main, Baden-Württemberg, Germany. They had eight children: Archduke Joseph Árpád of Austria Archduke Joseph Árpád Benedikt Ferdinand Franz Maria Gabriel (; 8 February 1933 – 30 April 2017) was a member of the Hungarian Palatine branch of the House of Habsburg-Lorraine. He was born in Budapest, the son of Archduke Joseph Francis of Austria and his wife, Princess Anna of Saxony. He was the great-grandson of Archduchess Gisela of Austria. He received a degree in economics from the University of Lisbon. Joseph married Princess Maria von Löwenstein-Wertheim-Rosenberg, born 1935,