Final answer:
Alliances played a significant role in igniting the war in Europe by creating a complex web of obligations among European countries.
Step-by-step explanation:
Alliances played a significant role in igniting the war in Europe. Prior to World War I, many European countries formed alliances as a way to protect their interests and maintain a balance of power. These alliances created a complex web of obligations, where an attack on one country would trigger a chain reaction, leading to all allied nations getting involved in the conflict. For example, the Triple Entente (alliance between France, Russia, and Britain) and the Triple Alliance (alliance between Germany, Austria-Hungary, and Italy) were the major alliances in Europe at the time.
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