Boundaries between the continents of Earth Boundaries between the continents of Earth The boundaries between the continents of Earth are generally a matter of geographical convention. Several slightly different conventions are in use. The number of continents is most commonly considered seven but may range as low as four when the Americas and Afro-Eurasia are each considered a single continent. According to the definition of a continent in the strict sense, an island cannot be part of any continent, but by convention and in practice most major islands are associated with a continent. There are three overland boundaries subject to definition: While the isthmus between Asia
Middle-earth Middle-earth was part of his created world of Arda (which includes the Undying Lands of Aman and Eressëa, removed from the rest of the physical world), which itself was part of the wider creation he called Eä. Aman and Middle-earth are separated from each other by the Great Sea Belegaer (analogous to the Atlantic Ocean). The western continent, Aman, was the home of the Valar and the Elves called the Eldar. The eastern side of Middle-earth was washed by the Eastern Sea. Beyond this lay an uninhabited Eastern continent, but this does not figure in the stories. Most of the