Hibernicus
Banned
Any PoD, resulting in a modern Poland that is Orthodox although does not have to have the same borders as OTL Poland, due to whatever butterflies the change of religion causes.
That's the reason most Eastern European peoples converted to Catholicism; to avoid conquest and plunder by German "crusaders."Easy. Mieszko I, instead of accepting Catholicism via Bohemia turns East and accepts Orthodoxy. AFAIK Orthodox Christianity was already heard of in his land, and since it didn't require praying in a strage lanugasge (Latin) it might be attractive ebnough. OTOH, one of the reasons Polish prince did what he did was to avoid Germans trying to baptize Poland by force, i.e. conquer it. Polabian Slavs already had those problems, he didn't want to be next. I'm not sure if it would have worked had he accepted Orthodoxy.