Serbian historiography does not support the viewpoint of the Historiography of Albania that the progenitors of Kosovan Albanians were native to Kosovo. Instead within Serbian historiography the presence of Kosovan Albanians and their eventual predominance in the region has been attributed by (nationalist) Serbian historians to a number of causes. Of those either the arrival and northward spread of Albanians from Albania after the Ottoman conquest, the Austro-Ottoman war that led to the northward migration of Serbs in 1690 with replacement by Albanians and or the assimilation of local Serbians into Albanians. Serbian national history views the Albanian presence in Kosovo apart from being recent immigrants as one that strongly supported and reinforced Ottoman rule meant to dislodge Serbs and to enforce Muslim control.