Foreign exchange, or forex, is the conversion of one country’s currency into another. In a free economy, a country’s currency is valued according to the laws of supply and demand. In other words, a currency’s value can be pegged to another country’s currency, such as the U.S. dollar, or even to a basket of currencies. A country’s currency value may also be set by the country’s government.
However, many countries float their currencies freely against those of other countries, which keeps them in constant fluctuation.
Factors Affecting Currency Value