The first map is not exactly correct, at least about Russia and Ukraine. I am from Russia and i can say that there are muslim, buddist and etc districts in our country. I also have been in Ukraine many times. East Ukraine, being closer to Russia, is Orthodox in general. West Ukaine, being closer to poland, is Catholic. Also ukrainian language differs very much in these different parts of the country. Sometimes people from East Ukraine can't understand people from the West part((((((.