Query: What was the region of Eastern Europe called in 1 AD?
Context: The region of modern Eastern Europe and Central Eurasia (Russia, Ukraine and other countries of the ex-USSR) have a long history of Christianity and Christian communities on its lands. In ancient times, in the first centuries after the birth of Christ, when this region was called[by whom?] Scythia - Christians already lived there. Later the region saw the first states to adopt Christianity officially - initially in Armenia (301 AD) and in Georgia (337 AD), later in the Great Russian Principality (Kyivan Rus, Russian: Великое княжество Русское, ca 988 AD).