Blaming Serbs for WWI is fabrication of history. i would only quote comment of the Serbian president here, from the above article:
As far as Germany and Austria-Hungary were concerned, World War I was imminent even without the assassination, he said, and added that "then, as well as now, as always, Serbia opposed the war. We deserved and received the halo of the righteous victors during and immediately after both world wars."
Also, this quote of Serbian president:
"Gavrilo Princip was a hero, a symbol of the idea of freedom, the assassin of tyrants and the carrier of the European idea of liberation from slavery," Nikolic said at the ceremony.
When we are at reasons for WWI and WWII, it would be worth to mention how Anglo bankers profited from the conflicts, while biggest biological and material losses suffered Slavs. Seams that even Germanics were manipulated in great Anglo schemes and their hate on Slavs used for the profits of Anglos who are higher then Germanics in the ``food`` chain.