Puerto Rico (English: The Commonwealth of Puerto Rico, Spanish: Estado libre Asociado de Puerto Rico) is located in the eastern part of the Greater Antilles in the Caribbean. Including Puerto Rico and small islands such as Vieques and Culebra. It borders the Atlantic Ocean in the north, the Caribbean Sea in the south, the United States and the British Virgin Islands across the sea in the east, and the Dominican Republic across the mona passage in the west. The capital is San Juan.
Puerto Rico has an area of 13790 square kilometers and a population of 3.674 million. Among them, the descendants of Spanish and Portuguese accounted for 76.2%.
Puerto Rico also has the Arecibo Observatory, the largest radio telescope in the world. Also belongs to the United States