[5] Pashtunization is a specific form of cultural assimilation and has been taking place in Pashtun-populated regions of Afghanistan and Pakistan for several centuries.
"In the eighth and ninth centuries, ancestors of many of today's Turkic-speaking Afghans settled in the Hindu Kush area (partly to obtain better grazing land) and began to assimilate much of the culture and language of the Pashtun tribes already present there.
Najib Bakran's geography, Jahān Nāma (c. 1200–1220), described the Khalaj as a "tribe of Turks" that had been going through a language shift.
Some of them left the area during the Mongol invasion of Central Asia towards the Indian subcontinent, where they built empires such as the Khalji dynasty of Delhi.
He is inclined to select colleagues not for their professional qualities but for their personal devotion to him, predominantly relatives and fellow-villagers".