Key currencies are the major currencies in the global economy, frequently used in international trade and finance.
The Smithsonian Agreement was a pivotal international accord signed in December 1971, which ended the fixed exchange rates established at the Bretton Woods Conference of 1944 and substituted a floating currency exchange rate.
An index that compares variances in the U.S. dollar's value on a scale of 100 with a basket of currencies that include the euro, the yen, the British pound sterling, the Canadian dollar, the Swedish krona, and the Swiss franc.
