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.
Southern Ukraine
Noticeable cultural differences in the region (compared with the rest of Ukraine, except Eastern Ukraine) are more "positive views" of the Russian language and of Joseph Stalin and more "negative views" of Ukrainian nationalism. In the 1991 Ukrainian independence referendum, a lower percentage of the total electorate voted for independence in Eastern and Southern Ukraine than in the rest of the country.
In a poll conducted by Kyiv International Institute of Sociology in the first half of February 2014, 19.4% of those polled in Southern Ukraine believed "Ukraine and Russia must unite into a single state"; nationwide this percentage was 12.5.