The First World War was a reaction to the world experiencing many changes in such a short time. Major events have been attributed to World War I, such as German unification, imperialism and the creation of peacetime alliance systems, but the ultimate reason for the war was the assassination of Franz Ferdinand the June 28, 1914. According to notes taken on the Civil War, Franz Ferdinand was the heir to the Austro-Hungarian throne and he was killed by a Serbian nationalist, Gavrilo Princip. After the assassination of Franz Ferdinand, the feud between Siberia and Austria-Hungary spiraled out of control. The Austro-Hungarian people were angry with the Siberian people after the assassination of Franz Ferdinand. Although Austria could not prove that Siberia planned the assassination of Franz Ferdinand, it publicly accused the Siberian government of being responsible for his death. According to the author of The Causes of World War I: A Narrative, the Austrian government knew it could count on Germany if it ever went to war. Thus, in the weeks following the assassination, Austria, allied with Germany, insisted on punishing Serbia. The Austrian government failed in its attempt to resolve its dispute peacefully by sending an ultimatum to Serbia, but Siberia was not willing to meet all of its demands. The feud between Siberia and Austria-Hungary would forever change the way foreign countries settled disputes. World War I was inevitable because neither Austria-Hungary nor Siberia was willing to reach a mutual agreement regarding the peaceful resolution of their disagreement. The conflict between Serbia and Austria-Hungary went beyond the government level, because the assassination of Franz Ferdinand was in the middle of a paper... a livelihood.” The war was ruining the world economy because supplies were exhausted and trade could not proceed properly. The only way for the world to survive was to end the war. The Treaty of Versailles of 1919 was signed, ending the war with Germany. Unfortunately, Germany was held morally and financially responsible for the war and had to pay France thirty-three billion dollars for the civilian casualties and damage it caused. World War I was an unnecessary war that could have been avoided with proper communication and negotiation techniques. Even though Germany was an ally of the Austro-Hungarian government, they should have known that this war was personal to them. Thousands of soldiers around the world lost their lives because a country wanted revenge for the death of its leader..