I think it is <span>Their descriptions are highly biased, and are therefore valuable for the truths they contain</span>
Everyone who lived in Athens.
I believe the answer you are looking for is B.
Provided economic aid to Europe = Marshall Plan
Outlined that ways to contain communism = Truman Doctrine
Approved the partition of Palestine = United Nations
Strengthened Soviet control over Eastern Europe = Warsaw Pack
It would be the job of the "c. the president of the United States" to uphold the supremacy clause of the United States Constitution, since this ensures the power of the federal government over the states.
