Comment: I will give you one example

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In reply to comment: After, therefore because (see in situ)

I will give you one example

Japan has high tariffs on food imports, the purpose is to support the Japanese farmers. Without the tariffs Japan would not have a domestic food supply because foreign competition would soon end most all agriculture on the island. There is no way Japan can produce food anywhere near the cost the US can, they just don't have the efficiencies of scale or the huge expanses of arable land the US does. Without the Japanese farmers a simple embargo would starve the island country into surrender.