>>13369737An unknown climate event destroyed all of Northern Europe wiping out most of the population, ether man made with over population or by a common theory "the great flood" caused by a unknown reason.
Everything makes sense, advanced mathematics 2,000 years before Greeks "discovered it" and that would explain why the Greeks always refer to "Atlantis" as an advanced civilization.
The theory which I believe is the "great tide" theory which destroyed nearly all of northern Europe. Imagine such a powerful tide that it flooded large parts of the Mediterranean and destroyed Doggerland, most of the populations of northern Europe must of been wiped out by that!