Eastern Europe is the eastern part of the European continent. There is no consistent definition of the precise area it covers, partly because the term has a wide range of geopolitical, geographical, cultural, and socioeconomic connotations. A 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 entity: the region lying in Europe with the main characteristics consisting of Greek, Byzantine, Eastern Orthodox, Russian, and some Ottoman cultural influences. Another definition 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. Most historians and social scientists view such definitions as outdated or relegated, but they are still sometimes used for statistical purposes.
While the eastern geographical boundaries of Europe are well defined, the boundary between Eastern and Western Europe is not geographical but historical, religious and cultural.
The Ural Mountains, the Ural River, and the Caucasus Mountains are the geographical land border of the eastern edge of Europe. Eastern Europe is formed by countries with dominant Eastern Orthodox churches, like Belarus, Bulgaria, Greece, Moldova, Montenegro, North Macedonia, Romania, Russia, Serbia, and Ukraine for instance.