Answer:
Puerto Rico is a self governing unincorporated territory of the US which some people would call a colony and others call a Commonwealth. The island was given to the United States as war booty by Spain after their loss in the Spanish American War after a token paument in the Treaty of Paris. The smallest of the Greater Antilles, it is an archipelago located east of the Hispaniola (Dominican Republic/Haiti). Thus the island is nestled in the south by the Caribbean Sea and in the north by the Atlantic Ocean.