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What is 1 + 3?
a tax on imported goods
a means of preventing a foreign product or service from freely entering a nation's territory
the price of one nation's currency in terms of another nation's currency
When a country imports more than it exports.
when a country exports more than it imports
a limit on the amount of a good that can be imported
the ability to produce more of a given product using a given amount of resources
ability to produce a good at a lower opportunity cost than another producer
commodities (goods or services) bought from a foreign country
commodities (goods or services) sold to a foreign country