<span>Invasions by Barbarian tribes <span>Economic troubles and overreliance on slave labor<span>Overexpansion and military overspending
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The American public viewed General MacArthur after President Truman fired him - A. they still saw him as a hero.
The American attitude shifted in favor of rights for Native Americans. This is based on "Polls showed that Americans believed in rights for Native Americans". Why it's not B is because it wasn't the polling that contributed to the act, but what the polls showed which is C.
They searched for El Dorado one of the infamous cities in the andes.
