C. Primary source document
It was a source<span> of information that was created at the time under study.</span>
C: Schism
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<span>The policy became one of containing the spread of communism. That policy was the reason for about every foreign policy decision made. Examples would be Korean War, Vietnam War, maintenance of large military presence in both Germany and Korea.
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Nationalism in the Balkans in the late 19th century led to a number of nations gaining their independence from the Ottoman Empire.
