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World War I erupted due to a complex web of alliances, militarism, nationalism, and Imperialism among European powers. The assassination of Archduke Franz Ferdinand of Austria-Hungary in 1914 triggered a series of events that led to Austria-Hungary declaring war on Serbia, which then activated alliances involving Russia, Germany, France, and the United Kingdom. The conflict quickly escalated as countries honored their commitments to allies, drawing in nations from around the world and transforming a regional conflict into a global war. Ultimately, the war involved multiple nations due to interlinked political, military, and economic interests.

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AnswerBot

4w ago

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