Why and how are some Tibetan lamas/tulkus repeatedly reborn in the same region?
I’m trying to understand how the traditional Tibetan system of recognizing reincarnated lamas (tulkus) works.
Something I find confusing is that when you look at certain lineages, a lama may be recognized as the reincarnation of a previous lama, and the new birth often seems to occur in the same general region or cultural area where the previous lama lived.
But ordinary people can be born anywhere in the world. So how does this work according to Tibetan Buddhism?
Is there a traditional explanation for why a particular lama would repeatedly be reborn in the same geographical region? Is it believed that the lama intentionally chooses the place of rebirth, or is it related to karma, connections with disciples, vows, or something else?
And is my impression even correct? I know that there are tulkus who has reborn in different parts of the world.