Its a bit hard to get a grasp on any specific inspiration, based on the very unfinished states of City State of Kurn and Prison State of Eldaarich , but with the help of other sources such as Lost Cities of the Trembling Plains and Wisdom of Sorrow but here’s what one can go off of:
-Kurnans are descended from a sea-going people known as the Kel Tas or Kel Tan, who used a Wasp for their symbol and had a strong maritime tradition, such as decorating their graves with stylized ships and anchors. Whether the Clave system (a mix of kinship unit and artisan guild) existed back then is unknown.
-Some Kurnan words
Maliis (first day of the month)
Orrins (the tenth day of the month)
Nenthos, Anantos (two months of Coolnights)
Eldaarich is descended from the “Mountain Men”, a relatively non-complex nomadic hunter-gatherer culture which revered spirits of air and the snow and mountains. These people were convinced by Daskinor that Goblins, whom tended to live in caverns at the root of the mountains, were blasphemous, and they practiced gruesome ‘sky burials’ by flaying and suspending goblins as sacrifice to the air spirits. They buried their dead with a chevron-shaped gravestone to guide the spirit upward to the mountaintops. Daskinor corrupted this spiritual system into his current god-king religion. The symbol of Daskinor and his bureaucracy is a Seven-Pointed Star. The Eldaarich use a pict-based written language, and some words from their spoken language, Eldaarish, include:
Takrits (‘Handmaidens’ or ‘Daughters’ (there are male Takrits)
Neshtap (‘Red Guard’)
Per Brax’s Wisdom of Sorrow these two peoples are both distantly descended from the ‘Tanysh’ who occupied the area north of Draj, and were a militant chariot-driving plains culture. Both groups split off and lived on one of the three habitable continents, one known as the ‘Equatorial Continent,’ they would return to living in the Tablelands with Keltis and Daskinor area, as their homelands were ruined by war and desertification.