Tahirid Dynasty (821 To 873)
The Tahirid dynasty ruled the northeastern Persian Empire region of Khorasan (parts that are presently in Iran, Afghanistan, Tajikistan, Turkmenistan, and Uzbekistan). The Tahirid capital was Nishapur.
Although nominally subject to the Abbasid caliphate in Baghdad, the Tahirid rulers were effectively independent. The dynasty was founded by Tahir ibn Husayn, a leading general in the service of the Abbasid caliph al-Ma'mun. Tahir's military victories were rewarded with the gift of lands in the east of Persia, which were subsequently extended by his successors as far as the borders of India.
The Tahirid dynasty is considered to be the first independent dynasty from the Abbasid caliphate established in Khorasan. They were overthrown by the Saffarid dynasty, who annexed Khorasan to their own empire in eastern Persia.
Read more about this topic: Military History Of Iran