mediumFPSCNTSCSSPPSCWorld War I & II
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Correct Answer: C: Archduke Franz Ferdinand
Explanation: The correct answer is C: Archduke Franz Ferdinand. The assassination of Archduke Franz Ferdinand of Austria-Hungary on June 28, 1914, by Bosnian Serb Gavrilo Princip triggered World War I. His assassination set off a chain reaction of alliance obligations.