Final answer:
The ultimate cause of World War 1 can be attributed to nationalism, militarism, imperialism, and the system of alliances.
Step-by-step explanation:
The ultimate cause of World War 1 can be attributed to a complex web of factors, including nationalism, militarism, imperialism, and the system of alliances. Nationalism, which is an intense loyalty and pride towards one's own nation, led to competition and rivalries between countries. Militarism, the glorification of military power and a buildup of armed forces, increased tensions among European powers. Imperialism, where countries sought to expand their territories and influence, also contributed to conflicts. Lastly, the system of alliances formed by various countries created a fragile balance of power and when one country was threatened, it led to a domino effect of declarations of war.
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