[sayn]

• The Tolnedrans - effectively the Roman Empire at the height of its power, with minor name and theology changes.
• The Mimbrates - 12th Century France or Normandy - specifically drawing on Knights, chivalry, Arthurian legends, and archaic speech (thee, thou), with feudal politics.
• The Asturians - 12th Century England - a general stereotype lifted directly from the Robin Hood legend.
• The Marags - Ancient Greece, specifically using an obsession with male beauty a la Michelangelo's David, and athletic endeavour in the style of the Olympics.
• The Chereks - directly lifted from the Vikings, with only minor name and theology changes.
• The Sendarians - analogous to a highly idealized view of Anglo-Saxon England.
• The Nyissans - broadly analogous to Ancient Egypt, with some elements drawn from India.
• The Algars - effectively Russian Cossacks, though also strongly related to the Mongols under Genghis Khan. There is also Native American influence.
• The Murgos - analogous to Atilla's Huns.
• The Ulgos - the biblical Israelites
• The Melcenes - They could be construed to be quasi-Japanese due to their small, commercial island nation

Don't credit this information to me. It's all from Wikipedia.