The assassination of Archduke Franz Ferdinand in 1914 sparked World War I due to alliances and nationalist tensions.
The assassination of Archduke Franz Ferdinand in 1914 was the immediate cause that led to the onset of World War I. This event triggered a series of alliances and geopolitical tensions, with Germany and the Ottoman Empire siding with Austria-Hungary, while Britain, France, and Russia allied with Serbia. Nationalism, military mobilization, and alliances were key factors that contributed to the outbreak of the war.
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