It seems I forgot to reply to the second half of Epaminonda's post...
Sauromatia is inspires by Herodotus' descriptions of the Scythians. C'tis is inspiree by Egypt and Mesopotamia.
While the majority of the historical-based nations (as opposed to fictional ones like R'lyeh) are based on European myths, there are several nations that are based on Asian or other myths. From Asia, in the Early age, there are:
Yomi (Japan), Tien Chi (China), Bandar Log (India), Lanka (India/Sri Lanka).
From Europe, there are:
Arcoscephale (Greece), Ermor (Rome/Byzantine), Ulm (German barbarians), Marverni (Celt/Gaul), Pangaea (Greece), Vanheim, Helheim and Niefelheim (Scandinavia).
There are also Sauromatia (Schythians), Caelum (Zoroastrian influences) and C'tis (Egypt). I'm not quite sure where Scythians lived, or where Zoroastrism was practised, but I think they were in Middle East or northern Africa, not Europe.