Three questions relating to the Spartan agoge:

1) Which faction can have family members undergo the agoge? Just the western and eastern Greek factions or also Eastern ones like Pontos and Pahlava?

2) What type of government is required in Sparta if you want family members to undergo the agoge? I recall reading somewhere that for factions other than the KH it needs to be either type III or type IV, but someone told me it works under type II as well.

3) Why do the Spartan starting characters lack agoge-related traits? Is this to indicate that the Agoge has been suspended for some time and they have only just started it again?