As a federation of united tribes, Hungary was established in 895, some 50 years after the division of the Carolingian Empire at the Treaty of Verdun in 843, before the unification of the Anglo-Saxon kingdoms. Initially, the rising Principality of Hungary ("Western Tourkia" in medieval Greek sources) was a state created by a semi-nomadic people. It accomplished an enormous transformation into a Christian realm during the 10th century.