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The Guarded Domains of Iran, commonly referred to as Afsharid Iran or the Afsharid Empire, was an Iranian empire established by the Turkoman Afshar tribe in Iran's north-eastern province of Khorasan, establishing the Afsharid dynasty that would rule over Iran during the mid-eighteenth century. The dynasty's founder, Nader Shah, was a successful military commander who deposed the last member of the Safavid dynasty in 1736, and proclaimed himself Shah. During Nader's reign, Iran reached its greatest extent since the Sasanian Empire. At its height it controlled modern-day Iran, Armenia, Georgia, Azerbaijan, Afghanistan, Bahrain, Turkmenistan, and Uzbekistan, and parts of Iraq, Pakistan, Turkey, United Arab Emirates, Oman and the North Caucasus (Dagestan). After his death, most of his empire was divided between the Zands, Durranis, Georgians, Khanate of Kalat, and the Caucasian khanates, while Afsharid rule was confined to a small local state in Khorasan. Finally, the Afsharid dynasty was overthrown by Agha Mohammad Khan Qajar in 1796, who would establish a new native Iranian empire and restore Iranian suzerainty over several of the aforementioned regions. The dynasty was named after the Turkoman Afshar tribe from Khorasan in north-east Iran, to which Nader belonged. The Afshars had originally migrated from Turkestan to Azerbaijan in the 13th century. In the early 17th century, Abbas the Great moved many Afshars from Azerbaijan to Khorasan to defend the north-eastern borders of his state against the Uzbeks, after which the Afshars settled in those regions. Nader belonged to the Qereqlu branch of the Afshars.