Old Great Bulgaria
The Bulgars became semi-sedentary during the 7th century in the Pontic-Caspian steppe, establishing the polity of Old Great Bulgaria c. 630–635, which was defeated by the Khazar Empire in 668 AD. In c. 679, Khan Asparukh conquered Scythia Minor, opening access to Moesia, and established the Danubian Bulgaria – the First Bulgarian Empire, where the Bulgars became a political and military elite. They merged subsequently with established Byzantine populations, as well as with previously settled Slavic tribes, and were eventually Slavicized, thus forming the ancestors of modern Bulgarians.