Most nations embrace trade with other nations to a substantial degree. Of course, there are examples of nations which embrace it less than others. Choose a nation which promotes isolationism. Look for evidence of policies, laws, regulations, etc. which promote self-sufficiency rather than trade. Cite two specific isolationist policies, laws, etc. which have led to quantifiable costs for the nation in question. For each policy/law, identify one cost for each of the two policies/laws you cite. Consider both the short run and long run. Cite your sources and include numerical support for your answer.