The Great Wall's Other JobA sophisticated system for border control.
From the show
Hidden Sides of HistoryDiscover the true, complex purpose of the Great Wall of China. Commonly seen as a single defensive barrier, it was actually a series of fortifications with multiple functions. The structure served as a vital tool for managing migration and taxing goods on the Silk Road. This network also acted as a transportation corridor and communication system, revealing it as an active instrument of state power and economic control, not just a passive line of defense.
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