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Which event started World War I? A. the sinking of the Lusitania by German U-boats B. the assassination of Archduke Franz Ferdinand and his wife, Sophie C. Germany’s annexation of Alsace and Lorraine after the Franco-Prussian War D. the Russian enforcement of Pan-Slavism throughout Slavic nations E. the signing of treaties in 1839 and 1867 to protect Belgium’s neutrality

User Seoppc
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Hello There!

The Answer To This Question Would be "B" the assassination of Archduke Franz Ferdinand and his wife, Sophie

Hope This helped!

User Graykos
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