Quote Originally Posted by Velox View Post
(most likely the Belah'dians but was never confirmed)
Proto-Belah'dians. Belah'dia was founded in the Sixth Astral Era, whereas Amdapor fell in the Sixth Umbral after the War of the Magi in the Fifth Astral. Surviving mages founded Belah'diah, and some of the ruins they built upon were already there from the previous Era (as Qarn tells us). These surviving mages are the ones that likely came from the groups using Black Magic.