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Bosnia wasn't an independent nation during the First World War, it was owned by Austria-Hungary at the time, the Emperor-King of Austria-Hungary was Franz-Joseph I until his death in 1916 and Charles I from 1916 until the dissolution of Austria-Hungary in 1918.
Austria-Hungary, with the death of Archduke Ferdinand, declared war on Serbia, which caused a chain reaction of war induced countries. Austria Hungary to Serbia, then Russia to Germany, United Kingdom and so on.
If you're talking about Austria-Hungary and the one whose death started World War I, that would be Archduke Franz Ferdinand. During World War II, considering that it started in 1939, Austria was already a part of Nazi Germany, making Hitler the leader of Austria (and all other German countries excluding Switzerland and Liechtenstein). Not sure who was in charge of Hungary during this time...
Austria-Hungary's reaction to the death of their heir was three weeks in coming. It issued an ultimatum to Serbia, which demanded that the assassins be brought to justice. Serbia had Slavic ties with Russia. In order to protect itself, the Austria-Hungarian government sought assurances that Germany would come to her aid should Russia declare war on Austria-Hungary. Germany, itching to use its military muscle, readily agreed.
Franz Joseph until his death in 1916. Karl I until the end of the war and he was forced to abdicate.
He was an archduke, an heir to the Austrian Hungarian throne who was assassinated by a member of The Black Hand, Princeipt. he was the arch duke of Austria Hungary and was the first in line for the throne of the country. Franz Ferdinand would have become one of the most influential men in the world. He was to become emperor of Austria-Hungary, and, had he not been assassinated, Austria- Hungary might still have survived to this day. he was an interesting person, and if you would like to learn more, read his page in wikipedia.
Following Archduke Franz Ferdinand of Austria-Hungary's death in June 1914 Germany instantly got involved helping Austria-Hungary by quickly overrunning: Belgium, Russia and France in the early stages.
After the death of King Louis II of Hungary and Bohemia in the Battle of Mohács in 1526, Archduke Ferdinand of Austria became King of Bohemia and the country became a constituent state of the Habsburg Monarchy.
The Black Hand was a secret Serbian ultranationalist group that wanted freedom for Bosnia from Austria-Hungary. On a trip to Serbia, Franz Ferdinand, the heir of the Austria-Hungary throne, and his wife were shot dead by Gavrilo Princip, a 19 year old member of The Black Hand.
Archduke Franz Ferdinand of Austria-Hungary was assassinated, along with his wife, in Sarajevo, capital of Bosnia and Herzegovina. The Balkan state had been occupied by Austria-Hungary under the Congress of Berlin (1878), and was treated as a province although still considered the sovereign territory of the Ottoman Empire.
Though European conflicts had existed for centuries, the murder of Franz Ferdinand sparked the beginning of World War I. Franz Ferdinand was next in line to the Austria-Hungarian throne. When he was assassinated Austria-Hungary declared war on Serbia, who sent the assassins. Serbia had allies including Russia, Great Britain and France Austria Hungary's ally was Germany. Germany declared war on Great Britain and France
Archduke Franz Ferdinand was the heir to the throne of Austria - Hungary in 1914. He was assassinated in Sarajevo along with his wife Sophie. Ferdinand was shot by 19 year old Gavro Princip, a member of a group of Bosnian Serb seperatists.Ferdinand was not a hugely popular figure but his death at the hands of Serbian backed assassins was the catalyst for the first world war.Francis Ferdinand