Final answer:
Militarism played a significant role in the cause of WWI, leading to an arms race and increasing tensions among major powers.
Step-by-step explanation:
Militarism played a significant factor in the cause of WWI. It refers to the aggressive buildup of military forces by nations, leading to an arms race and increasing tensions among major powers. The major powers of Europe, such as Germany and France, competed to have the strongest military, resulting in a power imbalance and heightened rivalries. This arms race ultimately contributed to the outbreak of WWI.
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