The answer would be...
FALSE
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America mainly stayed neutral during WWII. When Japanese forces bombed Pearl Harbor, Roosevelt felt it appropriate to declare war on Japan, thus entering the war.
The answer is A.
American System: the policy of promoting industry in the U.S. by adoption of a high protective tariff and of developing internal improvements by the federal government (as advocated by Henry Clay from 1816 to 1828).
Monroe Doctrine: a statement of United States foreign policy expressing opposition to extension of European control or influence in the western hemisphere.