Serbia
they were declared war on by austria-Hungary because Serbia sent assassins to kill franz Ferdinand - the heir to the throne of austrias Hungary
Germany started world war I, and it also started World War II by invading Poland.
I don't know that it was State sponsored as such: Gavril Prinzip was a Serbian.
The causes of World war 1 were, Imperialism, Nationalism, alliances, and Serbia sent assassins to kill Austro-Hungarian Prince Franz Ferndinand.
Germany
Romania is good friend with Serbia.And Romania will help Serbia kill all the albanians in kosovo.
Play assassins creed revelations, it will help
They went to help the Albanians take over Kosovo from Serbia.
Russia was a country that had a lot of Slavic people. Serbia was also a Slavic nation.
The assassination was the work of Bosnian Serbs, part of a nationalist group seeking an independent Balkan state. At the trial of the captured assassins, they disclaimed Serbian involvement. But evidence (and later trials in Serbia) pointed to involvement by at least three military intelligence officers of Serbia.
It is Serbia they live in a beautiful country and have lots of religions so when you have a problem there is always a god to help you . p.s i have been to Serbia it is beautiful!!