The Mongol Conquests

Lore & Background

The Mongol tribe's predecessors were first recorded in the late tenth century, migrating from eastern Manchuria to the Mongolian Plateau. During the twelfth century, the Mongols rose to prominence under khans who raided the Chinese Jin dynasty, but after the killing of khans Qutula and Ambaghai in the 1160s, the Mongols were reduced to poverty. Yesugei, a nephew of Qutula, had some success against the Tatars and was a friend of Toghrul, khan of the Kerait. Yesugei's son Temüjin (the future Genghis Khan) was born c. After Yesugei was poisoned by Tatars, Temüjin's family was abandoned, but he survived and later formed alliances with Toghrul and Jamukha to rescue his wife Börte from Merkit raiders. Temüjin's victory over the Merkit brought him prestige, but his ambition conflicted with Jamukha's, leading to hostility. Temüjin became the undisputed ruler of the newly unified Mongol Empire.

Reader's Guide

The Mongol military, reformed by Genghis Khan, eliminated traditional weaknesses of nomadic armies, such as poor siege warfare and lack of discipline, while building on strengths like horse-archery and mobility. Every adult Mongol man was a soldier, and the army used a decimal system to break tribal loyalties, with strict discipline enforced by execution for failures. The conquests reshaped political boundaries and trade routes across Eurasia, with lasting impacts on the regions they controlled.

Did You Know?

• A Mongol soldier typically took five or six horses on campaign, riding them on alternate days.
• The Mongols favored fighting in cold weather, unlike their enemies.