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.
Guam is the largest island in Micronesia and was the only U.S.-held island in the region before World War II. Guam was captured by the Japanese on December 8, 1941, just hours after the attack on Pearl Harbor, and was occupied for two and a half years.oday, 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.