Another difference is relations to annexed territories. Territories, annexed from Poland, had majority of population Eastern Slavs (Ukrainian and Belarussian),

Another difference is relations to annexed territories. Territories, annexed from Poland, had majority of population Eastern Slavs (Ukrainian and Belarussian), not Poles, were part of Russia for hundreds of years (except Galicia) and were annexed by Poland from Russia (Galicia from Austria) 20 years before.