1914
Austria-Hungary declared war on Serbia at the start of World War I.
The assassination of Archduke Franz Ferdinand of Austria in Sarajevo led Austria-Hungary to declare was on Serbia. This was to effectively be the beginning of World War I.
The 1st country to declare war on Serbia was Austria-Hungary.
Because the the Archduke Franze Ferdinand was the heir to the Austria-Hungary throne when him and his wife when assassinated by a Serbian Nationalist in Sarejevo. Austria Hungry Gave Serbia a ultimatum and when Serbia did not follow the ultimatum Austria-Hungry declared war with Serbia
No. Serbia assassinating Austria-Hungary's Archduke started WW1
austria declared war on Serbia in 1914
Serbia was in WWI because Austria-Hungary declared war on them.
Serbia Serbia
Serbia assassinated arch duke Ferdinand Austria attacked Serbia Russia attacked Austria because they were allied to Serbia Germany attacked Russia because Germany was allied to Austria France and England were allies of Russia, so Germany attacked France France was then in war with Germany
Austria-Hungary
Serbia
Serbia