in a typical obscurantist move, we're told the "Great Northern War" was another 20-year long war which happened a century earlier and it had Russia against an International Coalition (as usual, the Brits were involved)
Either the fallout from the indiscriminate use of plasma weapons clogged up the waterway network
Or it was simply decided this yet another goodie the slaves were no longer allowed to have
But it came to be that rail replaced water
And when did this happen ?
"On 1 September 1865, the English company John Trevor-Barkley began construction on the Bucharest–Giurgiu line. Commissioned by the King of Romania, the line was opened to traffic on 26 August 1869."
For those who don't know, here's a quick explanation - men have XY chromosomes, women have XX
That means the Y chromosome is passed unaltered from father to son
This makes it possible to trace paternal lineages
Of particular interest is the European distribution of the R1b male lineage
It overwhelmingly dominates the Atlantic coast, then is on a steady decrease the further one goes to the East, until reaching non-existence in Eastern Europe
I believe this makes it pretty clear what happened
These are the descendants of the army that destroyed the Old World
They came by sea, made landfall upon the Atlantic coast - and steadily advanced eastwards