
Together with those three currencies and Renminbi, it forms the basket of currencies which calculate the value of IMF special drawing rights. It is currently the fourth most-traded currency in the foreign exchange market, after the United States dollar, the euro, and the Japanese yen. Sterling is the world's oldest currency that is still in use and that has been in continuous use since its inception. The pound is the main unit of sterling, and the word "pound" is also used to refer to the British currency generally, often qualified in international contexts as the British pound or the pound sterling. Sterling is the currency of the United Kingdom and nine of its associated territories. dollar became an important international reserve currency after the First World War, and displaced the pound sterling as the world's primary reserve currency by the Bretton Woods Agreement towards the end of the Second World War. Since 1971, all links to gold have been repealed. From 1934, its equivalence to gold was revised to $35 per troy ounce. The Gold Standard Act of 1900 linked the dollar solely to gold. dollar was originally defined under a bimetallic standard of 371.25 grains fine silver or, from 1837, 23.22 grains fine gold, or $20.67 per troy ounce. The monetary policy of the United States is conducted by the Federal Reserve System, which acts as the nation's central bank. banknotes are issued in the form of Federal Reserve Notes, popularly called greenbacks due to their predominantly green color. dollar at par with the Spanish silver dollar, divided it into 100 cents, and authorized the minting of coins denominated in dollars and cents. The Coinage Act of 1792 introduced the U.S. The United States dollar is the official currency of the United States and several other countries.
