Currency - Modern Currencies

Modern Currencies

To find out which currency is used in a particular country, check list of circulating currencies.

Currency use is based on the concept of lex monetae; that a sovereign state decides which currency it shall use. Currently, the International Organization for Standardization has introduced a three-letter system of codes (ISO 4217) to define currency (as opposed to simple names or currency signs), in order to remove the confusion that there are dozens of currencies called the dollar and many called the franc. Even the pound is used in nearly a dozen different countries, all, of course, with wildly differing values. In general, the three-letter code uses the ISO 3166-1 country code for the first two letters and the first letter of the name of the currency (D for dollar, for instance) as the third letter. United States currency, for instance is globally referred to as USD. It is also possible for a currency to be internet-based and digital, for instance, a Bitcoin, the Ripple Pay system or Mintchip, and not tied to any specific country.

The International Monetary Fund uses a variant system when referring to national currencies.

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