Original sentence: The Bulgars (also Bolgars, Bulghars, Hunno-Bulgars or Proto-Bulgarians) prolific state builders in Eurasia who are thought to have originally lived as multi-ethnic conglomerations of seminomadic peoples (Volga BulgariaGreat BulgariaFirst Bulgarian EmpireSecond Bulgarian Empire), probably of Turkic descent,   originally from Central Asia, who from the 2nd century onwards dwelled in the steppes north of the Caucasus and around the banks of river Volga (then Itil)
Edited sentence: The Bulgars (also Bolgars, Bulghars, Hunno-Bulgars or Proto-Bulgarians) were a seminomadic people, probably of Turkic descent,   originally from Central Asia, who from the 2nd century onwards dwelled in the steppes north of the Caucasus and around the banks of river Volga (then Itil)