What were the Summary of the causes of World War 1?

World War I was primarily caused by a combination of militarism, alliances, Imperialism, and nationalism. The arms race and military buildup heightened tensions among European powers. Complex alliances, such as the Triple Alliance and Triple Entente, created an environment where conflict could quickly escalate. Additionally, nationalist fervor and imperial ambitions contributed to rivalries, culminating in the assassination of Archduke Franz Ferdinand, which triggered the war.