I want to put a slight question mark on the whether the Songhai empire was bigger than all of Europe. That would imply a size of over 10 million sqkm, a third of the entire African continent and vastly bigger than the extention alotted to the Songhai Empire in my historical atlases (perhas 3 million sqkm).
And the reference to a contemporary Mongol empire is puzzling. By Songhai's independence from Mali ~1375, the empire of Kublai Khan was no more. Could the reference be to Timur Lenk's (Tamerlane's) much more modest empire? The late middle ages were, for some reason, not a period of great empires on the Eurasian landmass, with Ming China as the chief exception.
To the guy who thought the Khmers aren't around any longer; you'd better keep a good distance to Cambodia, since it's inhabitants might be slightly irked by hearing that they don't exist anymore.
A Chinese ethnicity does exist; it's certainly the largest in the world, and one of the older. The fact that the PRC also includes a variety of ethnic minorities, some of the numbering in the millions (Uighurs, Mongols, Tibetans and some lesser-known groups) don't change the fact that by world standards, China is a relatively ethnically homogenous country.
If the Assyrians were to be added in, the Babylonian civ would have to suffer some editing too; no less than FOUR Assyrian campitals feature in the Babylonian city list (Nineve, Assur, Nimrud/Calah and Khorsabad/Dur-Sharrukin). As it's now, the Babylonian civ seems to represent all the Mesopotamian cultures before the Persian conquest.
)
