For those looking for more concrete information about Roman history, a classics professor I know has written a really in-depth two part series about immigration in the Roman Empire over at a new online classics journal called Eidolon:<p><a href="https:&#x2F;&#x2F;eidolon.pub&#x2F;barbarians-inside-the-gate-part-ii-c22c5becd228" rel="nofollow">https:&#x2F;&#x2F;eidolon.pub&#x2F;barbarians-inside-the-gate-part-ii-c22c5...</a><p>Granted, he&#x27;s writing about Republican Rome so it doesn&#x27;t directly relate to the 5th century, but it deals with similar themes in a thoughtful way.<p>And I agree that it would be better for everyone if we collectively just ignored the 2015 incarnation of Niall Ferguson, but unfortunately being a tenured professor at Harvard (and now Stanford) gives you quite the bully pulpit! His first book is actually good, but it&#x27;s been a downhill slide into largely fact-less political assertions and nasty ad hominem attacks since then...