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.
Ukrainian Soviet Socialist Republic
Following the failed August Coup in Moscow on 19–21 August 1991, the Supreme Soviet of Ukraine declared independence on 24 August 1991, which renamed the Ukrainian Soviet Socialist Republic to Ukraine. The result of the 1991 independence referendum held on 1 December 1991 proved to be a surprise. An overwhelming majority, 92.3%, voted for independence. The referendum carried in the majority of all oblasts. Notably, the Crimea, which had originally been a territory of the RSFSR until 1954, supported the referendum by a 54 percent majority. Over 80 percent of the population of Eastern Ukraine voted for independence. Ukraine's independence from the Soviet Union led to an almost immediate recognition from the international community. Ukraine's new-found independence was the first time in the 20th century that Ukrainian independence had not been attempted without either foreign intervention or civil war. In the 1991 Ukrainian presidential election 62 percent of Ukrainians voted for Leonid Kravchuk. The secession of the second most powerful republic in the Soviet Union ended any realistic chance of the Soviet Union staying together even on a limited scale. The Soviet Union formally dissolved three weeks after Ukraine's secession.