A central idea is that the United States embarked on globalization following WWII when the U. N. became the lead organization
charged with advancing international cooperation.
How does this idea shift over the course of the article?
(A) by highlighting historical details on tariffs, and explaining how specific free trade agreements were
enacted
(B) by defining the term "tariff," and describing how they have been used to protect manufacturing in the
United States
(C) by focusing on the post-Soviet world, and emphasizing how foreign policy revolves around globalization
today
(D) by providing a theory of how globalization works, and explaining how American attitudes changed