Barakzai dynasty
Successive governments of Afghanistan have promoted New Persian as an official language of government since the time of the Delhi Sultanate (1206–1526), even as those governments were dominated by Pashtun people. Sher Ali Khan of the Barakzai dynasty (1826–1973) first introduced the Pashto language as an additional language of administration. The local name for the Persian variety spoken in Afghanistan was officially changed from Farsi to Dari, meaning "court language", in 1964. Zaher said there would be, as there are now, two official languages, Pashto and Farsi, though the latter would henceforth be named Dari. Within their respective linguistic boundaries, Dari and Pashto are the media of education.