The farthest habitable spot to the south of Nejd is the Wadi Yabrin.
The habitable parts of the world are a limited area, exclusion from any of which is a diminution of the available markets of the nations excluded.
The conception of an encompassing ocean bounding the habitable world is found in the creation myths of the most ancient civilizations.
The Ionian geographers looked on the circular disk of the habitable world as surrounded by a mighty stream named Oceanus, the name of the primeval god, father of gods and men, and thus the bond of union between heaven and earth.
There was no prince greater or more formidable in the habitable globe.