How do nations disappear? There must be many ways by which they might achieve extinction. Certainly many nations have achieved it.
Once upon a time the Thracians were well-known, numerous, sometimes feared, sometimes admired, a nation to be reckoned with. And now there aren’t any.
You can’t just keep on trashing your civilization and still expect it to survive and prosper.
[And yes, I know I’m late today! I will try to catch up.]