R1b-L584 in Distant Lands
R1b-L584 is associated with the Trialeti-Vanadzor and Van-Urmia cultural horizons. However, there are several cases of this lineage appearing in distant regions. The most remarkable examples are the presence of L584 in Moldova during the Late Scythian period and in Mongolia during the Uyghur Khaganate period.
These cases cannot have a local steppe origin. They are almost certainly the result of migration from the Armenia–Iran–Caucasus region, given that older samples from Hasanlu and Armenia share common ancestors with these steppe L584 individuals. The question, therefore, is which historical event may have caused this migration.
In my opinion, one possible explanation is the back-migration of Scythians from West Asia to the north. The two cases in Mongolia could be connected either to Scythian movements or to the spread of Manichaean proselytism. The Uyghur Khaganate was a short-lived polity that adopted Manichaeism as its state religion.
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