In 215 BC, Qin Shi Huang ordered General Meng Tian to set out against the Xiongnu tribes in the Ordos region, and establish a frontier region at the loop of the Yellow River.[1] Believing that the Xiongnu were a possible threat, the emperor launched a preemptive strike against the Xiongnu with the intention to expand his empire.[1]
Course
In 215 BC, Meng Tian succeeded in defeating the Xiongnu, driving them from the Ordos and seizing their homeland.[3] After the catastrophic defeat at the hands of Meng Tian, the Xiongnu leader Touman was forced to flee far north into the Mongolian Plateau.[4]
Aftermath
Following the victory against the nomads, Meng Tian was instructed to secure the frontier with a line of fortifications, which would become known as the Great Wall of China.[5] Crown Prince Fusu and General Meng Tian were stationed at a garrison in Suide and soon began with the construction of the walled defenses, which would be connected with the old walls from the Qin, Yan, and Zhao states.[6]
As a result of the northward expansion, the threat that the Qin empire posed to the Xiongnu ultimately led to the reorganization of the many different Xiongnu tribes as they united into a confederacy against the unified Chinese state.[7]
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Cosmo, Nicola Di (1999). "The northern frontier in pre-imperial China". The Cambridge history of ancient China: From the origins of civilization to 221 B.C. Cambridge: Cambridge University Press. ISBN0-521-47030-7.
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