Ukraine was formerly part of a large collaboration of now separate countries known as the U.S.S.R.
Outline of Ukraine
Kievan Rus' (Old East Slavic Рѹ́сь, Рѹ́сьскаѧ землѧ, Greek Ῥωσία, Latin Rus(s)ia, Ruscia, Ruzzia, Rut(h)enia, Old Norse Garðaríki) was a loose federation of East Slavic tribes in Europe from the late 9th to the mid-13th century, under the reign of the Rurik dynasty. The modern peoples of Belarus, Ukraine, and Russia all claim Kievan Rus' as their cultural inheritance. At its greatest extent in the mid-11th century, it stretched from the Baltic Sea in the north to the Black Sea in the south and from the headwaters of the Vistula in the west to the Taman Peninsula in the east, uniting the majority of East Slavic tribes.
Kievan Rus' begins with the rule (882–912) of Prince Oleg, who extended his control from Novgorod south along the Dnieper river valley in order to protect trade from Khazar incursions from the east and moved his capital to the more strategic Kiev. Sviatoslav I (died 972) achieved the first major expansion of Kievan Rus' territorial control. Vladimir the Great (980–1015) introduced Christianity with his own baptism and, by decree, that of all the inhabitants of Kiev and beyond. Kievan Rus' reached its greatest extent under Yaroslav I (1019–1054); his sons assembled and issued its first written legal code, the Rus' Justice, shortly after his death.
The following outline is provided as an overview of and topical guide to Ukraine:
Ukraine is a sovereign country located in Eastern Europe. It borders Russia to the east, Belarus to the north, Poland, Slovakia and Hungary to the west, Romania and Moldova (including the disputed territory of Transnistria) to the southwest, and the Black Sea and Sea of Azov to the south. The city of Kiev (Kyiv) is Ukraine's capital.
Eastern Europe is the eastern part of the European continent. The term has widely disparate and varying geopolitical, geographical, cultural, and socioeconomic readings, which makes it highly context-dependent and even volatile; There are "almost as many definitions of Eastern Europe as there are scholars of the region". A related United Nations paper adds that "every assessment of spatial identities is essentially a social and cultural construct". One definition describes Eastern Europe as a cultural (and econo-cultural) entity: the region lying in Europe with main characteristics consisting in Byzantine, Orthodox, and some Turco-Islamic influences.
Another definition, considered outdated by most authors, was created during the Cold War and used more or less synonymously with the term Eastern Bloc. A similar definition names the formerly communist European states outside the Soviet Union as Eastern Europe.