10
lesson pretestMultiple Choice

Pretest

Question 10 • United States History and Geography

How did conflict in Serbia between Austria-Hungary and Russia help ignite World War I?

Answer
A
European countries united in an effort to ensure economic stability on the continent.
B
Europe split into Allied and Central powers to keep the conflict from hurting its interests in America.
C
Europe split into Allied and Central powers as countries honored alliances to fight together if attacked.
D
European countries united in a European Union to keep Russia out of the Ottoman Empire.

Explanation

Austria-Hungary’s conflict with Serbia drew in Russia, which supported Serbia and began mobilizing. Because European powers had alliances that committed them to support one another in a war, the conflict spread and Europe divided into the Allied and Central powers. Choice D describes this chain reaction; the other choices do not explain how the alliances widened the war.

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