Necropost ahoy!

Was listening to the old lorecast (episode 2) and a couple questions occurred to me.

1) Is the Age of Endless Frost the same as the 5th Umbral Era? None of the web sources for lore explicitly link the two but it seems like they're the same thing.

2) If Eorzea is based on Greece, what city-states do each of the nations correspond to? I'd imagine Ala Mhigo = Macedonia (first to fall to Persia). Ul'dah is Corinth (trade center), with a dash of Phoenicia (another merchant nation from an older era, which was ethnically a little, ahem, darker). Limsa Lominsa is Athens, the strongest naval power in the Hellenic league. Surprisingly, I would map Gridania onto Sparta, with its staunch isolationism and religious fanaticism.