Khwarazmian Conquest of Khorasan

Timeline

1. 1197–1198Eastern Khorasan frontier · KhorasanKhwarazm Shah Tekish assembled a large army in Transoxiana, crossed the Amu Darya toward Khorasan, and fought a battle with Ghurid defenders outside Nishapur as both sides contested control of the gateway to eastern Persia.
2. 1198Nishapur · NishapurKhwarazmian forces captured Nishapur, the Ghurid garrison routed, and Khorasan's political center fell into Khwarazmian hands; Tekish established direct rule over eastern Persia here.
3. 1198–1200Mashhad · MashhadThe Ghurid dynasty was forced to withdraw from Khorasan's major cities and fall back on western Afghanistan; Khwarazm controlled the line from Mashhad to Herat, and the empire's territory now adjoined the Persian heartland to the west, laying the foundation for Muhammad's further westward expansion after Tekish's death.