History
See also: Timeline of the Turks (500–1300)The date of the founding of the empire is uncertain. Khwarezm was a province of the Ghaznavid Empire from 1017 to 1034. In 1077 the governorship of the province, which since 1042/43 belonged to the Seljuqs, fell into the hands of Anush Tigin Gharchai, a former Turkic slave of the Seljuq sultan. In 1141, the Seljuq Sultan Ahmed Sanjar was defeated by the Kara Khitay at the battle of Qatwan and Anush Tigin's grandson Ala ad-Din Atsiz became a vassal to Yelü Dashi of the Kara Khitan.
Sultan Ahmed Sanjar died in 1156. As the Seljuk state fell into chaos, the Khwarezm-Shahs expanded their territories southward. In 1194, the last Sultan of the Great Seljuq Empire, Toghril III, was defeated and killed by the Khwarezm ruler Ala ad-Din Tekish, who conquered parts of Khorasan and western Iran. In 1200, Tekish died and was succeeded by his son, Ala ad-Din Muhammad, who initiated a conflict with the Ghurids and was defeated by them at Amu Darya (1204). Following the sack of Khwarizm, Muhammad appealed for aid from his suzerain, the Kara Khitai who sent him an army. With this reinforcement, Muhammad won a victory over the Ghorids at Hezarasp(1204) and forced them out of Khwarizm. Muhammad's gratitude towards his suzerain was short-lived. He again initiated a conflict, this time with the aid of the Kara-Khanids, and defeated a Kara-Khitai army at Talas (1210), but allowed Samarkand (1210) to be occupied by the Kara-Khitai. He overthrew the Karakhanids (1212) and Ghurids (1215). In 1212, Muhammad II shifted capital from Gurganj to Samarkand. Thus Muhammad II incorporated nearly the whole of Transoxania and what is now Afghanistan into his empire, which after further conquests in western Persia (by 1217) stretched from the Syr Darya to the Zagros Mountains, and from the Indus Valley to the Caspian Sea.
Read more about this topic: Khwarazmian Dynasty
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“If usually the “present age” is no very long time, still, at our pleasure, or in the service of some such unity of meaning as the history of civilization, or the study of geology, may suggest, we may conceive the present as extending over many centuries, or over a hundred thousand years.”
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