The Khanate of Khiva (Uzbek: خیوه خانلیگی, Persian: خانات خیوه‎‎) was a Central Asian Turkic state that existed in the historical region of Khwarezm from 1511 to 1920, except for a period of Afsharid occupation by Nadir Shah between 1740–1746. The Khans were the patrilineal descendants of Shayban (Shiban), the fifth son of Jochi and grandson of Genghis Khan. Centered in the irrigated plains of the lower Amu Darya, south of the Aral Sea, with the capital in Khiva City, the country was ruled by an Uzbek Turkic tribe the Khongirads, that came from Astrakhan. It covered present western Uzbekistan, southwestern Kazakhstan and much of Turkmenistan before Russian arrival at second half of 19th century.