en.wikipedia.org/wiki/United_States_dollar

The United States dollar is the official currency of the United States and its territories per the United States Constitution since 1792. In practice, the dollar is ...

transferwise.com/us/currency-converter/eur-to-usd-rate

Convert EUR to USD with the TransferWise Currency Converter.

www.xe.com/currencyconverter/convert/?Amount=1&From=USD&To=USD

USD to USD currency converter. Get live exchange rates for United States Dollar to United States Dollar. Use XE's free calculator to convert foreign currencies ...

www.usa.gov/currency

Learn about American money. ... Each week, the Federal Reserve Board lists the currency value of over 20 countries against the value of the U.S. dollar.

www.thebalance.com/the-u-s-dollar-3305729

Nov 8, 2018 ... The term U.S. dollar refers to a specific denomination and to the U.S. currency in general. It was initially traded as a coin worth its weight in ...