Slavs
Slavs can be further grouped by religion. Orthodox Christianity is practiced by the majority of Slavs. The Orthodox Slavs include the Belarusians, Bulgarians, Macedonians, Montenegrins, Russians, Serbs, and Ukrainians and are defined by Orthodox customs and Cyrillic script as well as their cultural connection to the Byzantine Empire (Serbs also use Latin script on equal terms). Their second most common religion is Roman Catholicism. The Catholic Slavs include Croats, Czechs, Kashubs, Moravians, Poles, Silesians, Slovaks, Slovenes, and Sorbs and are defined by their Latinate influence and heritage and connection to Western Europe. There are also substantial Protestant and Lutheran minorities especially amongst the West Slavs, such as the historical Bohemian (Czech) Hussites.
Ukraine–European Union relations
In a November 2014 poll by Rating joining the EU was supported by all but 2 Oblasts of Ukraine (provinces); in Luhansk Oblast and Donetsk Oblast (an area known as Donbass) people preferred Ukraine's accession to the Eurasian Customs Union. Traditionally Western Ukraine is found to be generally more enthusiastic about EU membership than Eastern Ukraine. In July 2012 and in May 2014 residents of West Ukraine (74% in July 2012 and 81% in May 2014), Central Ukraine (59% and 64%) and North Ukraine (56% and 71%) were the biggest supporters for EU membership. A June 2013 poll, on behalf of Deutsche Welle, found that 52% of Eastern Ukraine was in favor of joining the EU. But in a poll by ComRes (for CNN) in May 2014 only 19% of Eastern Ukraine considered Ukraine joining the European Union "Good". The May 2014 ComRes poll found out that in the 3 most eastern Oblasts of Ukraine (provinces), Kharkiv Oblast, Donetsk Oblast and Luhansk Oblast, 37% favored an alliance with Russia, 14% backed an alliance with the European Union and 49% stated Ukraine would be better off if it did not ally with either.