The grand strategy of isolationism is interlinked with notions of protectionism, which promotes political and economic barriers.
Isolationism was a political policy that was undertaken by the United States of America. This caused them to be uninvolved in international affairs especially in Europe and in Asia.
Protectionism is a form of isolationism. It is aimed at protecting the home or the domestic country from foreign competition through the use of quotas, tariffs etc.
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