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 in the West Indies, which is an archipelago of islands between southeast United States and northern South America. The island is in the Northern and Western Hemispheres, located at latitude 17 degrees North (approximately), and between longitude 77 and 79 degrees West. It is surrounded by the Caribbean sea. We form a part of the Greater Antilles, which also include Cuba, Puerto Rico and Hispaniola (Dominican Republic and Haiti).