During the few years it existed, the Uzbek Khanate was the preeminent state in Central Asia, ruling over most of modern-day Uzbekistan, much of Kazakhstan and Turkmenistan, and parts of southern Russia.Prior to the death of Shah Rukh in 1448 Sighnaq and other cities in Turan such as Uzkend and Sozak were invaded and captured by the Uzbeks.[2] Regarding these events, 16th century Khaidar Duglati in his Tarikh-i Rashidi reports:[7] At that time, Abulkhair Khan exercised full power in Dasht-i-Kipchak.Isán Bughá Khán received them with great honor, and delivered over to them Kuzi Báshi, which is near Chu, on the western limit of Moghulistán, where they dwelt in peace and content.After this point, Shaybani led his own conquests which largely consisted of cities in the fractured Timurid successor states (Such as Samarkand and Bukhara).[9] Muhammad Shaybani was killed in the Battle of Marv by the Safavids ruled by Shah Ismail in 1510, and had his skull turned into a jeweled drinking goblet.