EA Ermor has some fairly clear parallels with Rome and the start of Christianity. While the MA Ermor doesn't seem to tie in with history very well, LA Ermor can be interpreted as a what-if variant of Rome, where the Resurrection went off as promised and the faithful from EA Ermor's time are brought back to life. If it weren't for all the "evil-evil all the time" flavor text in LA Ermor, one could even view them as good guys, undead saints bringing about an age where everyone lives forever in peace. But Ermor is evil, so the end effect is a sort of heretical conflation of the Resurrection with the standard undead empire from so many fantasy books.
At least that's my thoughts on it
. If a developer wanted to share the actual ideas behind LA Ermor, I would be very interested.