Agricola won there or at least marched quite north, but just like Germania, there wasn't urbanization and the Romani would have had to build most from scratch: just not worth it, not to mention the locals didn't "understand" such a society and would rebel 24/7...
Beyond Dacia, simply could have never happened; the Kimmerios Bosporos would be just too isolated and culturally developed to be romanized; in Arabia and Mesopotamia the Romani tried and tried, but I don't see how anything other than local rulers could be implemented...
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