"It is no accident that this unmatched potential for progress and prosperity exists in three countries with such long-standing heritages of free government. A developing closeness among Canada, Mexico, and the United States-a North American accord-would permit achievement of that potential in each country beyond that which I believe any of them-strong as they are-could accomplish in the absence of such cooperation."-Source: Ronald Reagan, at his announcement for Presidential Candidacy, 1979The ideas in the excerpt most directly contributed to which of the following?

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