Ecuador adopted the dollar as its national currency to help stop soaring inflation.

The countries within the European Union that have adopted the euro as their currency.

Ecuador is not the first country in Latin America to adopt the dollar as its national currency.

In a bid to halt inflation, the government adopted the American dollar as its own national currency nearly two years ago.

The country adopted the euro as its currency, even though it's not a part of the European Union.

Indeed, bond investors are already speculating on which countries will be allowed to adopt the euro as their currency.

During his mandate, Slovenia adopted the euro as its official currency.

Several colonies and dominions adopted the pound as their own currency.

Hungary originally planned to adopt the euro as its official currency in 2007 or 2008.

In 2009, Slovakia adopted the euro as its official currency.