The 'post-roman system' ... what in the world are you talking about?
Are you talking about the Western Civilization or the entire world? Can you tell the difference? Because, for all of Americas, Oceania, sub-Sahara Africa and Eastern Asia there was never a 'Roman' era to begin with. And what form of "Roman" system are you talking about? The Kingdom period? The Republic? The unified empire? The dual empire? The Roman empire of the east? Don't BS me with the notion that Charles Magne revived the Holy Roman Empire - because if you do, then you just as well need to be coherent and admit that the Roman papacy is still to this day a continuation of the old Roman Empire. Oh wait - you can't, because it would render the 'post-roman system' notion invalid.
SC, you have bought into the whole JW reinterpretation of world history, where only the tidbits that seem to fit the prophetic interpretation aren't ignored and presented as 'evidence' to support a certain Bible view. I used to do the same, and thought I was very smart [because my average school mates and work mates didn't care s**t about these matters and every JW I knew would never research anything beyond WT literature]; but that all changed when I started seriously researching outside WT literature. Now I realize how willfully ignorant I used to be. I still have a lot to learn, about so many things - I wish I had the time for everything, I wish I had valued education even more when I went to University - but, for all my incipient knowledge, I'm proud to have quit being the willing ignorant. You too should try that. It's both humbling and liberating.
Eden