I've been trying to track down the reasoning why mongols have ultimogeniture as it exists in game, because to be frank from what I've read of Mongol history (which is admittedly just the empire), as well of the practicalities of it too frequently putting infants on the throne, its looked odd.
I'm not finding the support.
Firstly, what wikipedia has to say
Note that Tolui got the ancestral lands (Ghengis (obviously) having conquered substantial territory by this point, NOT what we would call the primary title - the next Great Khan was his third son Ogedai, history recording it being due to his first two sons being quarrelsome, and doubts over the parentage of his eldest son. It did later pass to Tolui's line through intrigues after Ogedai's death, but in that case, the lines of the first two sons had power bases too remote to be considered as Great Khan.
There is more than a little evidence that (at least in the early generations) high titles were elective (as per the period, this wasn't the modern concept of elective, sons and the dynasty were favored in practice, although other relatives got a shot) - this was a key factor in the switch from Guyuk to Mongke for Great khan.
Admittedly its often not clear how many sons the previous holder had (for example Batu was Jochi's second son (of 14)) and what had happened to the other sons but given the number of cases brothers succeed brothers, that they tended to favor the elder (who would have had time to build a reputation and power base) can be inferred . Oh yes, and they are almost invariably adults.
Would it not be better to move the mongols to elective gavelkind for duke+ titles instead?
I'm not finding the support.
Firstly, what wikipedia has to say
Ultimogeniture of the ancestral seat was traditional in Mongolia. Genghis Khan passed the Mongolian homeland of the Mongol Empire to his fourth son, Tolui[6] as the empire with its conquests was partitioned between his four sons. Among Mongols, each son received a part of the family herd as he married, with the elder son receiving more than the younger son, and the youngest son receiving the family tent in addition to his part of the family herd.[7] Likewise, each son inherited a part of the family's camping lands and pastures, with the elder son receiving more than the younger son. The eldest son inherited the farthest camping lands and pastures, and each son in turn inherited camping lands and pastures closer to the family tent until the youngest son inherited the camping lands and pastures immediately surrounding the family tent. Family units would often remain near each other and in close cooperation, though extended families would inevitably break up after a few generations.
Note that Tolui got the ancestral lands (Ghengis (obviously) having conquered substantial territory by this point, NOT what we would call the primary title - the next Great Khan was his third son Ogedai, history recording it being due to his first two sons being quarrelsome, and doubts over the parentage of his eldest son. It did later pass to Tolui's line through intrigues after Ogedai's death, but in that case, the lines of the first two sons had power bases too remote to be considered as Great Khan.
There is more than a little evidence that (at least in the early generations) high titles were elective (as per the period, this wasn't the modern concept of elective, sons and the dynasty were favored in practice, although other relatives got a shot) - this was a key factor in the switch from Guyuk to Mongke for Great khan.
Admittedly its often not clear how many sons the previous holder had (for example Batu was Jochi's second son (of 14)) and what had happened to the other sons but given the number of cases brothers succeed brothers, that they tended to favor the elder (who would have had time to build a reputation and power base) can be inferred . Oh yes, and they are almost invariably adults.
Would it not be better to move the mongols to elective gavelkind for duke+ titles instead?