It was known that the assassination was carried out by members of the Black Hand - a Serbian terrorist organization. The Austrian government believed that the terrorists were supported by the Serbian secret service.
They blame it on Serbia. It was their terrorist organization called the Black Hand that killed him (and his wife).
Austria-Hungary blamed Serbia for the assassination. The assassination happened in Bosnia, which was ruled by Austria-Hungary at the time; Bosnian separatists murdered the Archduke with some assistance from Serbian intelligence officials. The Austrian government, of course, found out about this and was not too happy.
the nation that Austria-Hungary thought responsible for the assassination was Serbiathe nation that Austria-Hungary thought responsible for the assassination was Serbiauniting bosnia with Serbia
The assassination of Austria's heir to the throne.
They annexed Bosnia
The assassination of Austria's heir to the throne.
Austria-Hungary declared war on serbia and Germany joined because it was allied with austria.
to liberate Serbia from Austria Hungary empire
The assassination of Austria's heir to the throne.
Serbia
The assassination of Archduke FerdinandThe assassination of Archduke Ferdinand
The assassination of Archduke FerdinandThe assassination of Archduke Ferdinand