Your challenge is to have the land of the modern-day countries of Poland, Lithuania, Latvia, and Estonia be a part of the Holy Roman Empire.
With a POD after 1200 AD, how is this possible?
With a POD after 1200 AD, how is this possible?
Hmmm... Perhaps Polish-Bohemian union under Premislids survives - let's say Wenceslaus III is not murdered and he manages to keep Polish crown. He and his successors works hard to integrate Poland into their kingdom and since Bohemia is a part of the HRE, welll... Problem is Poles were rather unhappy with such an idea and Bohemian rule in Poland after some time under Wenceslaus II became quite unpopular.
About Baltic States... More successful Teutonic Order which in time becomes part of the HRE? Question is I doubt the Order itself would be interested.
This would just lead to a personal union. But this is not enough to have Poland become part of the HRE. Bohemia was part of the HRE because it was conquered by the HRE. It as inside the HRE that Bohemia became a kingdom. Poland and Hungary were not conquered and became kingdoms when independant.
And if Poland is incorporated into Bohemia or if a new kingdom is created - Bohemia-Poland? Would it still be a part of HRE?