Genghis Khan — Founder of the Mongol Empire

Genghis Khan is born Temujin near the Onon River in the Khentii Mountains of Mongolia, the eldest son of Yesugei, a Borjigin chieftain, and his wife Hoelun. He is born clutching a blood clot, a traditional sign of a destined warrior.

When Temujin is around eight years old, his father Yesugei is poisoned by a band of Tatars. His family is abandoned by their tribe and reduced to a hunter-gatherer existence on the steppe. Temujin kills his half-brother Behter to secure his position as family heir.

Location: Mongolian Steppe

Temujin marries Borte, his betrothed. He forms critical alliances with Toghrul, khan of the powerful Kerait tribe, and his childhood anda (blood brother) Jamukha. When Borte is kidnapped by the Merkit tribe, the allies rescue her — but the rescue raises questions about the paternity of his first son, Jochi.

Location: Mongolian Steppe

Temujin suffers a clear defeat at the Battle of Dalan Baljut against Jamukha, whose forces are evenly matched. He likely spends the following years in the service of the Jurchen Jin dynasty in northern China, a period omitted from later Mongol chronicles.

Location: Mongolian Steppe

After Toghrul betrays him, Temujin decisively defeats the Kereit at the Jej'er Heights and absorbs their elite into his own tribe. In 1204, he defeats the Naimans at the Battle of Chakirmaut and executes his former anda Jamukha. Temujin emerges as sole ruler of the Mongolian steppe.

Location: Mongolian Steppe

Temujin convenes a kurultai (grand assembly) and formally adopts the title Genghis Khan. He implements sweeping reforms: reorganizing Mongol society into a military meritocracy based on decimal units (arbans, zuuns, mingghans, tumens), establishing a code of law (the Yassa), and promoting loyal commoners over traditional aristocrats.

Location: Onon River, Mongolia

Genghis Khan leads a large-scale raid into Western Xia, a neighboring kingdom. After a protracted siege of the capital, the Western Xia ruler submits and agrees to pay tribute to the Mongols, establishing Mongol dominance in northern China.

Location: Western Xia (northwest China)

After a four-year campaign, Genghis Khan captures Zhongdu (modern Beijing), the capital of the Jurchen Jin dynasty. The Mongols demonstrate their siege-craft capabilities against a sophisticated walled city, marking the beginning of the Mongol conquest of northern China.

Location: Zhongdu (Beijing), China

Genghis's general Jebe annexes the Central Asian state of Qara Khitai, eliminating a potential rival and securing the western approaches to the Mongol Empire. This opens trade routes along the Silk Road and brings the Mongols into direct contact with the Islamic world.

Location: Central Asia

After the Khwarazmian Shah executes Mongol envoys and traders, Genghis Khan invades the Khwarazmian Empire with an estimated 100,000 to 200,000 troops. The campaign topples the entire state, devastating the cities of Samarkand, Bukhara, and Urgench, and destroying the region's irrigation systems.

Location: Transoxiana and Khorasan (modern Uzbekistan, Turkmenistan, Iran, Afghanistan)

Generals Jebe and Subutai lead an expeditionary force that reaches Georgia and defeats the Georgian army before advancing into the Caucasus and defeating a combined force of Cumans and Rus at the Battle of the Kalka River. This reconnaissance-in-force brings the Mongols to the gates of Europe.

Location: Georgia, Caucasus, Kievan Rus

Genghis Khan dies during the final campaign to subdue the rebellious Western Xia, likely on August 25, 1227, at age approximately 65. His body is returned to Mongolia in secret; the location of his burial remains unknown. His empire is divided among his sons, with his third son Ogedei eventually succeeding him as Great Khan.

Location: Xingqing, Western Xia