The Virgin Islands of the United States (commonly called the United States Virgin Islands or U.S. Virgin Islands) are a group of islands in the Caribbean that are an insular area of the United States. The U.S. Virgin Islands consist of the main islands of Saint Croix, Saint John, and Saint Thomas, along with the much smaller but historically distinct Water Island, and many other surrounding minor islands. The total land area of the territory is 133.73 square miles (346.4 km2). As of the 2000 census the population was 108,612, mostly composed by those of Afro-Caribbean descent. Tourism is the primary economic activity, although there is a significant manufacturing sector. Formerly the Danish West Indies, they were sold to the United States by Denmark in the Treaty of the Danish West Indies of 1916. Today tourism is the primary economic activity. The islands normally host 2 million visitors a year, many of whom visit on cruise ships. read more…