B thats the only answer i could think of
A court case that was one over by the government.
The answer is A. Due to the Ottoman Empire’s aggression and that the Balkan states declared independence. With empires like Austria-Hungary and the Ottoman Empire this was the “Power keg of Europe.” After the Death of Franz Ferdinand Austria Hungary declared war of Serbia setting off the power keg. The Ottoman Empire declared war on the allies and helped Austria Hungary.
Your question does not make any grammatical sense.