Solution:The Caribbean Islands is a massive archipelago located in the Caribbean Sea that can be subdivided into a few different regions: the Lucayan Archipelago, the Greater Antilles, the Lesser Antilles and the ABC Islands.There are 13 sovereign states and 17 dependent territories in the Caribbean, and the predominant languages are English, Spanish, French, Dutch, and Antillean Creole.
Major islands are - Anguilla, Antigua, British Virgin Islands, Grenada, Montserrat, Saint Martins, etc.
Madeira Islands, is an archipelago of volcanic origin in the North Atlantic Ocean, belonging to Portugal. It comprises two inhabited islands, Madeira and Porto Santo, and two uninhabited groups, the Desertas and the Selvagens.