In this interview* Mister Armağan says "for example, Sarranid Sultanate, it represents arabic and moorish cultures", so in Bannerlord if we look at timeline, Aseria represents Abbasid Caliphate ? Or maybe Fatimid Caliphate ?
*; https://www.youtube.com/watch?v=UgiTCPcU1MQ
Also in this Blog ( https://www.taleworlds.com/en/Games/Bannerlord/Blog/8 ), Blog says Nords represent vikings, it would be Sturgians in Bannerlord ?
This is from same blog ;
Bannerlord is set 200 years before Warband. Players who followed Warband's lore will recall that Calradia was once an empire, which declined and was supplanted by successor states -- tribal confederations-turned-kingdoms -- much as the Western Roman Empire was supplanted by early medieval states.
Calradic Empire represents Western Roman Empire confirmed ?