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Seahaven is effectively a city state. It is ruled over by a regency and a bicameral parliament - one of the noblility and the other made up of civilian merchants and many political factions).
By the way, my players have never seen a population center larger than a village at this point... though they have been told that cities do exist!
This is only a draft map of the area, made with Hexographer, which I am still learning.