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.
Today, Guam's economy is supported by its principal industry, tourism, which is composed primarily of visitors from Japan. Guam's second largest source of income is the United States Armed Forces.uam lies between 13.2Â°N and 13.7Â°N and between 144.6Â°E and 145.0Â°E, and has an area of 212 square miles (549 km 2), making it the 32nd largest island of the United States. It is the southernmost and largest island in the Mariana island chain and is also the largest island in Micronesia.