What were major reasons why foreign policy led the United States to become world power?

or:What were major reasons why foreign policy led the United States to become world power?or:I think you have the idea backwards. The USA became a wo

or:What were major reasons why foreign policy led the United States to become world power?

or:I think you have the idea backwards. The USA became a world power before it needed a foreign policy. Before WW2 the country was merely meddling in foreign affairs.

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