It probably is, this is a continuation. I just chose a manuscript I knew from around the start date of the game, but the idea was actually very popular in the middle ages. Apparently, later it was also applied to America by George Herbert and your author(s) is probably another continuation of this, although possibly modified. It is called translatio studii. https://en.wikipedia.org/wiki/Translatio_studiiCan't find a source for the spirit of civilization or whatever traveling West to America. So I don't know if it was a continuation of that theory, or something else someone cooked up. However, there are plenty of mentions about the US founding fathers referring to Rome, so I believe it's plausible someone at some point someone has said something like that.
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