I actually discussed this very model of bad history on ACOUP. It was not 'uncontrolled immigration' that brought down the Roman Empire, but the Roman refusal to incorporate the new arrivals as their predecessors had done time and time before. https://acoup.blog/2021/07/30/collections-the-queens-latin-or-who-were-the-romans-part-v-saving-and-losing-an-empire/ …https://twitter.com/reeshistory/status/1454479087314087948 …
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Is there anything to read explaining why the empire stopped being able to integrate 'new' peoples?
