The Known World
Erwā (Er̃-WAH), commonly referred to simply as The Known World, is the portion of Prāmos (the Material Plane) documented by the mortal peoples. Usually the "known" part is particular to a specific people or region and even the ancient name of Erwā is not universally agreed upon (there are numerous lexical variants). The name is generally used only in certain religious works and myths and is often seen as an archaism, even to scholars.