Slavs
Slavs are the largest ethno-linguistic group in Europe. Present-day Slavic people are classified into East Slavs (chiefly Belarusians, Russians, Rusyns, and Ukrainians), West Slavs (chiefly Czechs, Kashubs, Moravians, Poles, Silesians, Slovaks and Sorbs), and South Slavs (chiefly Bosniaks, Bulgarians, Croats, Macedonians, Gorani, Pomaks, Montenegrins, Serbs and Slovenes).
Ukraine
The second largest Christian group in Ukraine, Catholicism, is predominantly represented by the Ukrainian Greek Catholic Church, an Eastern Catholic Church in communion with the Holy See of the Roman Catholic Church. It recognizes the primacy of the Pope as head of the Church while still maintaining a similar liturgical and spiritual tradition as Eastern Orthodoxy. Additionally, there are a small number of Latin Rite Catholic communities (1.0%). The church consists mainly of ethnic Poles and Hungarians, who live predominantly in the western regions of the country. Protestants in Ukraine make up 1.9% of the population as of 2016. A further 7.1% of the population declares to be simply Christian.