The Causes of World War I.

World War I was the result of chain-reacting events; originated from the Crises in the Balkans which led to the Collapse of Bismarckian Alliances. The creation of The Triple Entente and the Triple Alliance further escalated the tension contributing to the outbreak of the war. Increase in international tension, caused by the division of Europe into two armed camps, provoked fear of war and prompted military alliances and an arms race. The system maintained the …

…after that, German declared war against Russia and France, who also refused Germany's request to stay neutral, and the First World War had begun. In summary, Three Emperors' League was a worthy system to prevail the balance of power, and it could have properly maintained Europe's relations among the Ottoman's dominion over the Balkans. To put it more concretely, Assassination in Sarajevo could not have caused the "World War" if this system was still functioning.