The U.S. dollar is the currency most used in international transactions. Several countries use the U.S. dollar as their official currency, and many others allow it to be used in a de facto capacity. It's known locally as a buck or greenback.
The dirham was introduced in 1973 to serve the seven countries of the United Arab Emirates. The seven countries, termed emirates, are Abu Dhabi, Ajmān, Dubai, Fujairah, Ras al-Khaimah, Sharjah, and Umm al-Quwain.
