World War One was unlike an other war before; within four years the fighting resulted in over thirty-eight million casualties. Leading causes of the catastrophic war includes nationalism, militarism, the formation of rival alliances, the assassination of Archduke Francis Ferdinand, heir to the throne of Austria-Hungary. Nationalism is the act of being devoted to one’s nation. This belief increased tensions because it intensified international rivalries. Very similar Prior to World War One, tensions grew between strong nations, who began storing weapons for when war broke out. “A spirit of militarism, or glorification of the military, grew in the competing countries and fueled this arms race even more” (Lapsansky-Werner). With the arms race