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According to Wāqid ibn 'Amr Tamimi, the oldest biographer on Babak, Bābak's father was a Persian cooking-oil vendor from Ctesiphon, capital of the Sasanian Empire (modern al-Mada'in, 35 km south of Baghdad in Iraq) who left for the Azerbaijani frontier zone and settled in the village of Balālābād in the Maymadh district.
Satrap was the name given to the governors of the provinces of the ancient Median and Achaemenid (Persian) Empires and in several of their successors, such as the Sasanian Empire and the Hellenistic empires.
When the Sasanian Empire fell, Yazdegerd III ordered Adhar Valash to cede the dominion to spahbed Gil Gavbara in 645 CE, while western and Southern Gilan and other parts of Gil's domain merged under the name of Tapuria.
In late 588, a massive army of Turks invaded the eastern provinces of the Sasanian empire, reaching as far as Badghis and Herat.