If it was not for the alliance systems the war would have only been between Austria-Hungary and Serbia but since they were there, other countries started joining the war. Tension built between other countries which made the situation even worse in some aspects. Because of the alliance system Europe was split into two, the Triple Alliance and the Triple Entente. The Triple Alliance was made up of Germany, Austria-Hungary, and Italy. The Triple Entente was made up of France, Russia, and Great Britain (later on American will join). Most of the tension was built upon Germany because they seemed to be the biggest threat. ("DBQ: What Were the Underlying ...", 2010, p. Doc
If it was not for the alliance systems the war would have only been between Austria-Hungary and Serbia but since they were there, other countries started joining the war. Tension built between other countries which made the situation even worse in some aspects. Because of the alliance system Europe was split into two, the Triple Alliance and the Triple Entente. The Triple Alliance was made up of Germany, Austria-Hungary, and Italy. The Triple Entente was made up of France, Russia, and Great Britain (later on American will join). Most of the tension was built upon Germany because they seemed to be the biggest threat. ("DBQ: What Were the Underlying ...", 2010, p. Doc