well, didn't know Caelum was based on Zoroastrianism, still don't understand it since Zoroastrianism revolves around the sacred fire and Caelum is well, a Lightning nation... also didn't know that Abysia is supposed to represent Babylonia(again, how exactly...?
).
now that you mention it, Marignon does fit better with France/Spain with the inquisitors and all, for some reason when I thought about "breaking from the Falling Roman Empire" I thought about the Byzantine era instead of classical Rome, hence my guess of Turkey and the Inquisitors in this case being the Muslims hunting down Christians(in Armenia and the Levante, against the Crusades).
and yes, India doesn't really fit with Japan and China, nor do the Aztecs for that matter
but since I didn't(and still don't quite understand) that Caelum and Abysia are supposed to represent the Mesopotamian area as well...
also time frames in Dominions are painfully mixed up as it is, so limiting it to both geography and time lines seems like a stretch. for example TC Imperial Bureaucracy refers mainly to the Tang-Sung Dynasties which will be around the 7th-12th centuries, a bit after the Roman empire, while in the time of France and England, and way ahead of the Persians. Shinuyama is ugh... Japanese Mythology perhaps? I'm not really sure, but seems more ancient than modern Imho... Bandar Log on the other hand(along with Kailasa, Lanka, and Patala, and any other monkey nation if I forgot any) already have a built in caste system, which was started by the British in the 19th century... however its roots are delved from the Vedas, which is ancient India...