Allagans in Tural?

[Zero-ELEC]

There was nothing of Allag before Xande's birth because he was its genesis. As for after Xande, the EE says that the subsequent emperors after his passing continued conquering, it wasn't just Xande who did that. They only stopped when there was nothing left to conquer on the Three Great Continents.

The book goes on to say that after that there was 300 years of peace and prosperity, though we know the empire lasted ~1000 years so only a smaller portion of it was actually peaceful. The empire started to decline after that 300 years. Suicide rates went up, birth rates plummeted, rebellions sprouted where there were bad leaders. And we don't know how good it was for everyone. We already know that the Allagans were prejudiced against Miqo'te and initially kicked them out of Eorzea to Corvos, where they still remain (and before the area had any revealed recorded history of proto-Garleans).

The empire was created and manipulated by the Ascians just like the Garlean Empire, to be lifted up to as great heights as possible, for it to come crashing down with such force that it breaks the world and eats another. Some individuals within the empire may certainly have had good intentions, but the empire as a whole was built for evil purpose and it can't just be pinned on Xande since his descendants perpetuated it, at least for a time.

We have to keep in mind that we actually know that Allag existed before it was an Empire. Their knowledge of summoning came from before those times, way before their aetherochemical revolution, when they were menaced by people who invoked eikons.