Nation’s exchange rate value for its currency in foreign exchange markets.  A nation's balance of trade if the nation's currency appreciates. Why?

Definition Definition Difference in value of a country's net exports and net imports for goods and services in a given period. A positive balance of trade is called a surplus and coincides with more net cash inflows into a country; a negative balance of trade deficit is a deficit and results in net cash outflows. A balance of trade surplus or deficit doesn't necessarily indicate a positive or negative situation for a country.