Original sentence: A large part of the region's population included Turkic groups such as Sabirs, Barsil, Bilars, Baranjars, and part of the possibly Iranian Burtas (by ibn Rustah).Chuvash people.Khanate of Kazan.List of Turkic dynasties and countries.Some Bulgar tribes, however, continued westward and eventually settled along the Danube River, in what is now known as Bulgaria proper, where they created a confederation with the Slavs, adopting a South Slavic language and the Eastern Orthodox faith.The original Bulgars were Turkic steppe nomads who lived north of the Black Sea.Timeline of Turks (500-1300).Turkic peoples.Volga Bulgaria (, ), or Volga–Kama Bulghar, was a historic Bulgar state that existed between the 7th and 13th centuries around the confluence of the Volga and Kama rivers, in what is now European Russia.Volga Tatars
Edited sentence: A large part of the region's population included are groups such as Sabirs, Barsil, Bilars, Baranjars, and part of the possibly Iranian Burtas (by ibn Rustah).Some Bulgar tribes, however, continued westward and eventually settled along the Danube River, in what is now known as Bulgaria proper, where they created a confederation with the Slavs, adopting a the Eastern Orthodox faith.The original Bulgars were Turkic or Indo-European steppe nomads who lived north of the Black Sea.Volga Bulgaria (), or Volga–Kama Bulgaria, was a historic Bulgar state that existed between the 7th and 13th centuries around the confluence of the Volga and Kama rivers, in what is now European Russia