The US Virgin Island is a group of Island and Islets that rise out of the Caribbean waters 1,770 kilometers south of Miami and east of Puerto Rico. The official language is English, and other languages widely used are Spanish and Creole. School attendance is compulsory between the ages of five to sixteen, thus Virgin Islands ranks among the world's most literate regions, with ninety eight per cent literacy rate. The U.S. dollar is the monetary unit of this country. Charlotte Amalie is the capital and largest city of the US Virgin Islands and it was founded in 1666. The population of this Island is 109,666 people. The official language is English. This Island has more than 250 species of plants, exotic fruits, nuts, and vegetables are produced on the Virgin Islands. Among them are cassava, cashew, arrowroot, coconuts, grapes, and custard apple. Tourism is the main industry on the islands. Over 2 million people visit this island every year.