I looked at the map overlaying the US to contrast the relative size of the Roman Empire. I think it might be shown a bit bigger than it was. We vacationed in Fr

I looked at the map overlaying the US to contrast the relative size of the Roman Empire. I think it might be shown a bit bigger than it was. We vacationed in France and Rome and took a train overnight between them. That train had a ton of stops. I'm pretty sure that even without the stops, it would take longer than a night to travel by rail from approximately Montana (where France would roughly be) to the south-eastern Gulf Coast region (Italy). Edit: Checking Google maps and more maps on the OP page I think I mis-calculated Italy's position in the purple blob, it would probably be around where Kansas is.