PR..................an island of stars............where the official currency is the US dollar........as it is in the USA..........and El Salvador..............the US dollar is not only accepted in El Salvador and Puerto Rico............it is the official money.........

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2. Puerto Rico

   Territory
3. Puerto Rico is a Caribbean island and unincorporated U.S. territory with a landscape of green mountains, waterfalls and the tropical rainforest of El Yunque National Forest. It's known for its white-sand beaches and coral reefs, popular for snorkeling, diving, surfing and sailing. In San Juan, the capital and largest city, the Isla Verde area is known for its beach bars, nightclubs and casinos.
5. Capital: San Juan
6. Founded: December 10, 1898
7. Dialing code: +1
8. Currency: United States Dollar
9. Population: 3.548 million (2014)