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Because if you produce goods in Japan then you use the yen as your currency (that is what you pay your taxes and workforce in). However you may sell your goods in the US and Europe. The people in the US will purchase them in dollars and in Europe in euros and you therefore need to convert these currencies into yen so that you can pay your local debts.

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15y ago
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13y ago

For people who visit that country and that they will be able to purchase things if needed.

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Q: Why does international trade require a system for exchanging currencies?
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