The British pound, the pound sterling or GBP, is the fifth-most valuable currency in the world. One of the oldest currencies on our list, it first saw circulation in 1489. Today, traders will ...

One international currency regularly tops world rankings ... You can find the full list of the world's weakest currencies here.

International currency arrangements have come under scrutiny in the aftermath of the global financial crisis The dollar has been the preeminent global reserve currency for most of the past century.

Read on to learn more about the dollar's unofficial status as the world's currency, why it is so popular, and how U.S. dollars that move into and out of the U.S. are tracked. Dollarization is the ...