China's first emperor unified the empire with bronze standards
China's first emperor, Qin Shi Huang, unified his empire in 221 BC by standardizing weights and measures, revolutionizing trade and administration for millennia.
In 221 BC, Qin Shi Huang, China's first emperor, standardized weights and measures across his newly unified realm. Before this, each state had its own systems, causing chaos in trade and taxation. By establishing uniform bronze standards for items like the catty (600 grams) and chi (23 centimeters), he created a cohesive empire.
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