Add 'UNITED STATES' to the list of countries using US Dollars.
Add 'UNITED STATES' to the list of countries using US Dollars.

United States was missing from the list using USD currency.
seddonym/py-moneyed,udemy/py-moneyed,valericus/py-moneyed,spookylukey/py-moneyed,limist/py-moneyed,DisruptiveLabs/py-moneyed,rescale/py-moneyed,nabucosound/py-moneyed