What were the four main long-term causes of World War I?

• A. Militarism, alliances, imperialism, and nationalism
• B. The assassination of Archduke Franz Ferdinand
• C. Economic decline and trade embargoes
• D. A series of cold wars between nations

Answer: (A)

The main idea being tested is what built up over decades to make World War I possible. The four long-term forces that researchers cite are militarism, alliances, imperialism, and nationalism. Militarism means European powers expanded and glorified their armed forces and developed rapid mobilization plans, so leaders felt war could come quickly and were prepared to act on it. Alliances created a dense web of mutual defense pacts that drew multiple nations into any confrontation, turning a local dispute into a continental war. Imperialism drove fierce competition for colonies and global influence, heightening rivalries and suspicion among great powers. Nationalism intensified loyalty to one’s state while pushing subject or minority groups toward independence, destabilizing multi-ethnic empires and increasing the likelihood that a regional crisis would flare into wider conflict. The assassination of Archduke Franz Ferdinand was the trigger that started the war, but the four factors above had already set the stage for a large-scale conflict. The other options point to events or dynamics that did not shape the long-term structure of the era in the same way.