One of the causes of World War I was _________.
A) the deteriorating standards of living in Europe.
B) the assassination in Serbia of Austrian Archduke Ferdinand.
C) Europe had experienced several wars in recent decades that spilled over into World War I.
D) the European working class was increasingly fractured and nationalistic.

Question

Quizplus · Accepted Answer

The assassination of Archduke Franz Ferdinand of Austria in Sarajevo, Bosnia, by a Serbian nationalist on June 28, 1914, directly precipitated the outbreak of World War I by causing Austria-Hungary to declare war on Serbia, setting off a chain of alliances and declarations of war.

One of the Causes of World War I Was _________