Tales from the Dawn

[WellGramarye]

I'm not sure what you're basing this on. Your inferences aren't even implied by the text in question (in fact, they're explicitly contradicted by it, by both interlocutors in different ways), but on the specific point of the sacrifices, nothing I am aware of implies it was only Amaurotines who sacrificed. Quite the opposite:

You realize that at the point that Zodiark was summoned, only Amaurot was left, and that half of mankind, is only half of Amaurot right?

1) Source? 2) Amaurot had already begun working on methods to resolve the situation as noted here. Even if we were looking at this purely through entirely selfish, pragmatic lenses, there is no reason for Amaurot to allow the incident to spread to the point it became uncontainable and left only it as a source of potential fuel for Zodiark (a primal who, in turn, was their last resort based on the JP dialogue of the Amaurot instance, as it refers to their other attempts failing due to the warping of creation magicks.) This is in addition to what the Watcher mentioned about their research to try understand the causes of the incident. To me, it sounds like you're trying to force a conclusion out of this in disregard of the sources involved.

The Convocation, and Amaurot itself had a policy of non-intervention. You can see this in the Tales Story- Ere Our Curtain Falls, the quest Debate and Discourse as well as a few other places I can't be arsed to dig up on. Its the whole reason that the Azem's, Venat and [insert player], were lauded as being free spirited trouble makers and often censured by the rest of the Convocation. Amaurot was the end all be all for the citizens of Amaurot.

Also, to point out, please tell me the name of any other city on the planet, at the time of Amaurot. I'll wait.

The only places we ever see are Amaurot and its research facilities (Anyder, Elpis, Pandaemonium) which are all still Amaurot. The Pre-sundered world is shown through the lense of hypocritical selfish god-lings.