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.
Image copyright. The US territory of Guam is a keystone of American military strategy in the Pacific. Tourism and an expanding military presence form the bedrock of its economy. The island is an important staging post, allowing rapid access to potential flashpoints in the Koreas and in the Taiwan Strait.