Regions such as Germany, Benelux, France, Iberia and the British Isles have such a lucky array of conditions that seemingly would always naturally lead them to flourish.
No enemies in the west due the Atlantic, hordes and other asian empires walled off by a number of Eastern European nations, access to the New World and Africa to exploit resources and take advantage of globalisation, and fertile farmlands around rivers that can sustain large populations which naturally allows for more technological, social, or artistic innovations.
For Eastern European nations to be relevant, it seems to me that they have to be huge in territory, like the PLC or Russia.
The problem I’m proposing is, would it be possible to have Eastern Europe replace Western Europe as being an area of rich, populous lands and centres of innovations. A scenario where Poland, Hungary, the Baltics are all great powers and Western Europe would be filled either with sparsely populated rump states or a mess of tiny nations.
Would it be possible? If so, how would it be possible? If not, how could it be possible? And what significant changes/effects on the world could we see from a dominant Eastern Europe.