Jamaica is an island nation of the Greater Antilles, 240 kilometres (150 mi) in length and as much as 85 kilometres (50 mi) in width situated in the Caribbean Sea. It is 635 kilometres (391 mi) east of the Central American mainland, 150 kilometres (93 mi) south of Cuba, and 180 kilometres (112 mi) west of the island of Hispaniola, on which Haiti and the Dominican Republic are situated. Its indigenous Arawakan-speaking Taíno inhabitants named the island Xaymaca, meaning either the "Land of Springs," or the "Land of Wood and Water." Formerly a Spanish possession known as Santiago, then the British West Indies Crown colony of Jamaica, the country's population is composed mainly of the descendants of former African slaves. It is the third most populous Anglophone country in the Americas, after the United States and Canada.