Vladimir II of Kiev, also known as Vladimir the Great, was a ruler of the Kievan Rus' from 980 to 1015. He is best known for his role in the Christianization of the region, converting to Christianity himself and promoting the faith among his people. This significant shift helped to unify the diverse tribes under his rule and laid the foundation for the future development of Eastern Orthodox Christianity in Russia and Ukraine. Vladimir was born around 958 and was a member of the Rurik dynasty. He expanded the territory of Kievan Rus' through military conquests and strategic alliances. His reign marked a period of cultural and political growth, establishing Kiev as a major center of power in Eastern Europe. Vladimir's legacy continues to influence the region's history and religious landscape.