While I can see what you’re trying to do on the Westros side (I think it’s a stretch), how are you arriving at the conclusion that essos is in the renaissance? I think you said that once. If not, my back up comment is about the importance of old nan in the generations of stark children.

Well, you might want to read this series I wrote on the different city-states of Essos. But the short version is: the Free Cities are (mostly) republican city-states rather than monarchies or feudal aristocracies, their economies are based on finance, commerce, and advanced manufacturing rather than subsistence farming; in terms of technology, Myr is producing lenses, telescopes, and advanced crossbows; Braavos uses the assembly line and interchangeable parts in the manufacture of ships and uses double-entry bookkeeping in its finance; Qohor has advanced metallurgy. Culturally, Braavos has Elizabethan theater for crying out loud!