dolar money of u.s.a

The United States dollar (sign: $; code: USD) is the unit of currencyof the United States and is defined by the Coinage Act of 1792 to be between 371 and 416 grains (27.0 g) of silver (depending on purity). The U.S. dollar is normally abbreviated as the dollar sign, $, or as USD or US$ to distinguish it from other dollar-denominated currencies and from others that use the $ symbol. It is divided into 100 cents (200 half-cents prior to 1857).
Taken over by the Congress of the Confederation of the United States on July 6, 1785,[2] the U.S. dollar is the currency most used in international transactions.[3]Although U.S. dollar is a fiat currency, several countries use it as theirofficialcurrency, and in many others it is the de facto currency[4]