I think the idea is that the different Earths have the same landmasses, and in particular the landmass corresponding to our Japan has in Dath Ilan an exile-location function that is vaguely analogous to Australia in the past in our timeline.
I think the idea is that the different Earths have the same landmasses, and in particular the landmass corresponding to our Japan has in Dath Ilan an exile-location function that is vaguely analogous to Australia in the past in our timeline.