A core is your old worn out (yet still rebuildable) engine or part that is required as a trade in when you purchase a remanufactured or sometimes a new one. An acceptable core or rebuildable core is one that is not broken, damaged beyond repair, or so severely cracked that is can no longer be machined back to proper working condition.
Jamaica is part of the continent of North America. North America includes Canada, the United States, Mexico, and the islands of the Caribbean Sea.
Jamaica is an island country located in the Caribbean Sea. It is part of the Greater Antilles a group of islands. Cuba is located about 145 kms north of the country and about 190 kms east the Hispaniola, the island constituting of the nation-states Haiti and the Dominican Republic located.