The dollar is the name of the official currency in several countries, dependencies and other regions, including Australia, Canada, the East Caribbean, Liberia, Hong Kong, New Zealand, Singapore and the United States. The dollar was also in use in Scotland during the 17th century. It is represented by the symbol $, placed before the dollar amount.
A few nations outside of US jurisdiction use the United States dollar (USD) as their official currency. These nations include Ecuador, Palau, East Timor, and the Federated States of Micronesia. In December 2001, Argentina was considering converting to the dollar.