[MediumOwl]

> The supersonic airliner is for some reason not available either.

This whole comment shows a solid amount of ignorance of history, but this particular quote is completely preposterous. "for some reason" is money, plain and simple. Just go read the Wikipedia article on Concorde. And there are plenty of supersonic military airplanes, the technology is definitely there.

> Same happened in Rome, and Rome itself together with Greece rediscovered civilization from a much darker age before them.

Did you ever hear about Ancient Egypt?

[Anotheroneagain]

There were many like Egypt, Egypt was exceptional that it some sort of survived (but actually not really), while the rest got wiped completely. Then a dark age followed.