alternatehistory.com

In the 2nd century AD the population of China and the Roman Empire were about the same. But the Roman empire fell in decay whereas China went on and had relative times of peace and prosperity. I know China didnt exist, but there were several dynasties, but still it was more unified than the Roman provinces ever were after it broke into parts.
So what would the world look like if the roles were turned? If the Roman territories had known the stability that China knew and China fell apart into loads of nations?
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