Respuesta :
The assassination of Franz Ferdinand and his wife, Sophie, is the event started World War I. Thus, option (b) is correct.
What is World War I?
A world war is one in which every major nation in the world participates, or nearly does. World War I is another name for the Great War, which started in 1914.
On June 28, 1914, a Bosnian Serb nationalist shoots to death Franz Ferdinand of Austria and his wife Sophie while they are on an official visit to Sarajevo, the capital of Bosnia.
Therefore, option (b) is correct.
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