Original sentence: Asparukh attacked Byzantine territories in Eastern Moesia and conquered the Slavic tribes there in 680.Not long after the Slavic incursion, Scytia Minor was once again invaded, this time by the Bulgars under Khan Asparukh.The First Bulgarian Empire was founded in 681 as an alliance between the ruling Bulgars and the numerous slavs in Lower Moesia
Edited sentence: Asparukh attacked Byzantine territories in Moesia and conquered the Slavic tribes there in 680.Not long after the Slavic incursion, Moesia was once again invaded, this time by the Bulgars under Khan Asparukh.The First Bulgarian Empire was founded in 681 as an alliance between the ruling Bulgars and the numerous slavs in the area, becoming the oldest still existing Slavic state