After the Austro-Hungary monarchy declared war on Serbia, France and Russia who were protecting Serbia declared war on Austria-Hungary. and then Germany declared war on Russia and France, then UK declared war on Germany...
Austria Hungary declared war on Serbia.
do you know when Britain declared war on Germany and austria-Hungary
Austria-Hungary, declared war on Serbia
Germany, austria-Hungary, the ottomons, Croatia
Everything!!!
Austria-Hungary declared war on Serbia at the start of World War I.
Austria-Hungary declared war on serbia and Germany joined because it was allied with austria.
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.
Serbia Serbia
Serbia was in WWI because Austria-Hungary declared war on them.
Check out http://www.firstworldwar.com/features/declarationsofwar.htm Here's how the dominos fell in WWI: Archduke Franz Ferdinand of Austria assassination on 28 June 1914 Austria-Hungary declared war on Serbia on 28 July 1914 Russia, Germany & France mobilize over the next few days. Germany declared war on Russia on 1 Aug 1914 Canada, France, Russia, Belgium, and the UK were all in a state of war with Germany, A-H within 2 weeks. Italy, Greece, Turkey and the USA entered the war somewhat later.