What is a country’s currency?

A more general definition is that a currency is a system of money (monetary units) in common use, especially for people in a nation.  These various currencies are recognized as stores of value and are traded between nations in foreign exchange markets, which determine the relative values of the different currencies.

Explanation:

balearic sea - is a body of water in the mediterranean sea around the balearic islands. baltic sea - is a mediterranean sea of the atlantic which is enclosed by scandinavian and baltic countries. barents sea - is a marginal sea in the artic ocean located off the northern coast of norway and russia.

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when you sing louad enough the vibration of you voice is able to shatter glass so yes vibration is your answer

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