Without international trade, the iphone is mainly produced and consumed in U.S. With international trade, U.S may choose to export some of the products to other countries (i.e. selling at international markets) or import some of the products from other countries (i.e. purchasing from international markets). Using your knowledge on international trade, critically discuss under what conditions U.S may choose to export and under what conditions U.S may choose to import. Use examples and graphs to facilitate your discussions if you think you need them.