These five causes include the four long-term causes (militarism, alliances, imperialism and nationalism) discussed in this reading and one short-term cause (the assassination of Franz Ferdinand).
Difference in policies were to blame, although the immediate cause of World War one was the assassination of Austria's Archduke Franz Ferdinand. The war started mainly because of four aspects: Militarism, Alliances, Imperialism and Nationalism. Mark me brainliest please