I don't know what Ala Mhigo was suppose to be based on. The concept art just makes it look like another Ul'dah. The Ala Mhigo armor was rather mundane looking, and the purple cannons that are everywhere look like they were from a cartoon. I don't think the devs ever had a handle on what Ala Mhigo was suppose to be because they didn't base it off a real world culture.
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While I'd have loved to visit Egypt or Petra or Jerusalem during their heydays, Ala Mhigo is clearly not any of those. In fact, I can't understand why the Empire even took it over, clearly they weren't interested in their quarries or salt and that's all the region is, salt and rocks. It's basically a wasteland filled with poor people, not exactly at the top of most people lists on things people want to visit.
https://vignette.wikia.nocookie.net/...20130901034308