Edited sentence: DNA, linguistic and archaeolical research tend to show that the Slavs are the decendants of the indigenous Illyrian and Thracian populations.Despite what has been written as history for the last 200 years, there is no evidence for a mass migration of Slavs into the Balkan region.The Austrian authorities propagated the Slav migration theory in an attempt to counter the growing nationalist movements in the Balkans during the late 1980's.The Slav migration theory was more a result of Austro-German politics and then an accurate reflection of historical facts.The only reason the Slav migration theory still exists at all today has alot to due with the wish by certain segments of English academic and political circles to see the recreation of Yugoslavia dominated by an Anglo controlled puppet Serbia.The theory was also maintained by the former Yugoslav communist party as one of the main arguments for keeping Yugoslavia together