LEO

six Byzantine emperors: Leo I. (400-74), defeated Huns in Dacia; sent fleet against Vandals.—Leo III. (680740), conquered Saracens, 719; introduced religious and civil reforms; forbade image-worship; began separation of Gk. from Rom, Church.—Leo V., emperor, 813-20; fought against Arabs; worship; a a inated.—Leo VI., emperor, 886-911; lost The alonica to Mohammedan pirates.