Answer: The answer is Governments are able to exert control over the value of fiat money.
Most nations use fiat money today because governments are able to exert control over the value of fiat money.
Explanation: Fiat money refers to legal tender that does not have intrinsic value. Its value is derived from its issuing government instead of a physical good or commodity. Fiat money is based on the credit of the economy and it takes the place of gold standard and other commodities. Fiat money was introduced as a substitute to commodity and representative money.