Create a 'barbarian horde' at the latest possible date with the latest possible POD.
Bonus points if the members of the barbarian horde are European or Chinese.
Remnants of Mongolic-Turkish Khanates endured into the 20th century under the heavy hand of Ottoman, Russian, and Chinese rule, with varying amounts of autonomy. What ended that? WW1, the Soviet Union, and the Chinese Republic+People's Republic.Create a 'barbarian horde' at the latest possible date with the latest possible POD.
Bonus points if the members of the barbarian horde are European or Chinese.
The Russians might have a strong case for the Nazi's fitting that description as would the Jews in Poland
Chinese held the entire world with disdain, granting few exceptions.The Chinese view all Europeans as barbarians (well, foreign devils at any rate), though they didn't arrive in China during the 19th Century in large hordes.