Question

the fighting of world war i broke out in 1914 following which event?
○a. the beginning of the bolshevik revolution
○b. the german acquisition of alsace - lorraine
○c. the policy of unrestricted submarine warfare
○d. the assassination of archduke franz ferdinand

Explanation:

The assassination of Archduke Franz Ferdinand of Austria - Hungary in Sarajevo on June 28, 1914, was the immediate trigger that led to the outbreak of World War I. The Bolshevik Revolution began in 1917, the German acquisition of Alsace - Lorraine was a result of the Franco - Prussian War in 1871, and unrestricted submarine warfare was a factor that drew the US into the war but not the starting event.

Answer:

D. the assassination of Archduke Franz Ferdinand