Genghis Khan Dies: Mongol Empire Marches On

The man who conquered more territory than any individual in human history died in August 1227, during the final campaign against the Western Xia kingdom in northwestern China. Genghis Khan was approximately 65 years old. The exact cause of his death remains unknown, with sources variously attributing it to injuries from a fall off his horse, an infected arrow wound, or illness. The Mongols concealed his death until the campaign was concluded, and his burial site has never been found. Born as Temujin around 1162 on the steppes of central Mongolia, he endured kidnapping, enslavement, and the murder of allies before uniting the fractious Mongol tribes under his leadership by 1206. The tribal assembly that proclaimed him Genghis Khan, meaning "universal ruler," created a military machine unlike anything the medieval world had seen. His armies were organized on a decimal system, utterly meritocratic, and capable of coordinating complex operations across thousands of miles using a relay messenger system that could transmit orders faster than any contemporary communication network. Between 1206 and 1227, Genghis Khan conquered northern China, destroyed the Khwarezmian Empire across Central Asia and Persia, and sent armies raiding as far west as Poland and Hungary. The scale of destruction was staggering. The population of the Khwarezmian Empire may have been reduced by 90 percent. Cities that resisted were razed and their inhabitants massacred. Modern estimates suggest that Mongol conquests killed 40 million people, roughly 10 percent of the world's population, a demographic catastrophe that measurably reduced global carbon emissions. Yet Genghis Khan also established the Pax Mongolica, a period of relative stability across Eurasia that facilitated trade and cultural exchange along the Silk Road. He introduced a written legal code, promoted religious tolerance, established diplomatic immunity for ambassadors, and created a postal system that connected China to Eastern Europe. His body was carried back to Mongolia by an escort that reportedly killed every person they encountered along the route to keep the burial location secret. Eight centuries of searching have not revealed it.