Vladimir I of Russia

Vladimir I, known as Vladimir the Great or Vladimir the Saint, was Prince of Novgorod and then Grand Prince of Kiev, the ruler who transformed Kievan Rus into a Christian state aligned with Byzantine civilization. He seized power in Kiev around 980 after defeating his brother Yaropolk in a brutal civil war, initially reinforcing paganism and reportedly maintaining an enormous harem. A decade later, his religious conversion would change everything. Around 988, Vladimir converted to Eastern Orthodox Christianity and accepted baptism, reportedly after sending envoys to investigate the major religions of his neighbors — Islam, Latin Christianity, Judaism, and Byzantine Orthodoxy. The Primary Chronicle records that his envoys, on visiting the Hagia Sophia in Constantinople, reported that they knew not whether they were in heaven or on earth, and that they could not forget that beauty. Vladimir married Anna, the sister of the Byzantine Emperor Basil II, in what was simultaneously a religious and diplomatic alliance of the highest importance. Following his own baptism, Vladimir ordered the mass baptism of the population of Kiev in the Dnieper River — an event commemorated annually in Ukraine and Russia as the Christianization of Rus. He destroyed pagan idols, built churches, established schools, and invited Byzantine clergy to organize the church in his realm. This alignment with Byzantine civilization shaped Russian, Ukrainian, and Belarusian culture, religion, and identity for over a thousand years. Vladimir was canonized as a saint equal to the Apostles in the Eastern Orthodox Church.

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