Question 31 • World History CR
The immediate spark that set off World War I was the assassination of Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, by a Serbian nationalist in 1914. The killing led Austria-Hungary to declare war on Serbia, triggering a wider chain of alliances and declarations of war. Germany’s invasion of Belgium and its declarations of war came later, while the Lusitania was sunk in 1915.
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