What were the European causes of World War 1?

The European causes of World War I primarily stemmed from militarism, alliances, Imperialism, and nationalism. Militarism led to an arms race among the major powers, creating a tense atmosphere. The complex web of alliances, including the Triple Alliance and Triple Entente, meant that a conflict involving one nation could quickly involve others. Additionally, fervent nationalism fueled rivalries and conflicts over territories, particularly in the Balkans, ultimately culminating in the assassination of Archduke Franz Ferdinand, which triggered the war.