Popocatepetl, the second highest volcano in Mexico, is a giant stratovolcano, 70 km (~45 miles) southeast of downtown Mexico City, and 45 km (~30 miles) southwest of the city of Puebla.
Guam Currency (code) Guam > Economy. Currency (code): US dollar (USD) Definition: This entry identifies the national medium of exchange and, in parenthesis, gives the International Organization for Standardization (ISO) 4217 alphabetic currency code for each country.
In 2010, the GDP (PPP) of the US territory Guam was estimated at $2.5 billion. Tourism is the most significant industry, generating great revenue. The territory is a favorite holiday destination.