Complex sentence: In it he speaks about two groups of proto-Balkars who came from Elbrus to settle parts of Armenia dated to the second half of the 4thC.AD at about the same time the Huns began their expansion in the East-European steppes.
Split into simpler sentences: In it he speaks about two groups of proto-Balkars who came from Elbrus to settle parts of Armenia. These migrations are dated to the second half of the 4thC.AD at about the same time the Huns began their expansion in the East-European steppes.