The First World War had many causes; the historians probably have not yet discovered and discussed all of them so there might be more causes than what we know now. The spark of the Great War was the assassination of the Archduke Francis Ferdinand, heir to the throne of Austria-Hungary, and his wife by a Serbian nationalist on the morning of June 28, 1914, while traveling in a motorcade through Sarajevo, the capital city of Bosnia and Herzegovina. The Archduke was chosen as a target because Serbians feared that after his ascension to the throne, he would continue the persecution of Serbs living within the Austro-Hungarian Empire. The Serbian terrorist organization, the Black Hand, had trained a small group of teenage operatives to infiltrate Bosnia and carry out the assassination of the Archduke. It is unclear how officially active the Serbian government was in the plot. However, it was uncovered years later that the leader of the Black Hand was also the head of Serbian military intelligence. In order to understand the complexity of the causes of the war, it is very helpful to know what was the opinion of the contemporaries about the causes of the Great War. In the reprint of the article "What Started the War", from August 17, 1915 issue of The Clock magazine published on the Internet the author writes: "It is thought that this war that is been ongoing for over a year, began with the assassination of the Archduke Francis Ferdinand. However, many other reasons led to this war, some occurring as far back the late 1800's. Nationalism, militarism, imperialism, and the system of alliances were four main factors that pressed the great powers towards this explosive war." According to the article above, the author stresses that the nationalism was one of the primary causes of the war. In the ninetieth and twentieth centuries, especially after the French Revolution nationalism was becoming a powerful force in Europe so people that had the same ...