Perhaps a PoD as far back as the Poland-Lithuania Commonwealth? Can Poland end up subsuming Russia, and if so does it move east past the Urals and expand "Manifest Destiny"-like across Siberia? Is this possible? Poland, despite its reputation as being the place armies cross constantly, did however when it was independent always did try to go east and conquer more territory at the expense of White Russia and Ruthenia/Ukraine (even in the post war period of 1918-1923). If Poland did become the alternate Russia, does history rhyme as far as extent of empire in the East? Even as far as intervention in China, war with a rising Japan, great power status, Great Game Central Asia against Britain, and how does this affect things like Napoleon, WWI, German unification, and World War I?