What ancient Chinese dynasty first bulltalong wall, one made out of packed earth? Tang Hen Qin Ming

The answer is **Hen**.<br /><br />While the Qin dynasty is famous for connecting and strengthening existing walls to create the precursor to the Great Wall we know today, archaeological evidence suggests that rammed earth walls were built for fortifications as early as the Han dynasty (which succeeded the Qin). However, the use of rammed earth for defensive walls goes back even further. The Han dynasty (206 BCE – 220 CE) expanded upon earlier walls, but the technique of building rammed earth walls dates back to the Warring States period (475-221 BCE), with some evidence pointing to even earlier construction during the preceding Eastern Zhou dynasty. Within the Warring States period, the **State of Chu**, and other states like Qi, Wei, Zhao, and Yan, all constructed such walls. The Chu state existed during the Eastern Zhou period and continued into the Qin dynasty's brief reign. Since the question asks about a *dynasty*, and Chu was a state within a dynasty (similar to how a state is part of a country today), the closest dynastic period would be the **Eastern Zhou**, which encompasses the time when the Chu state built its rammed earth walls. Since "Hen" is likely a typo for "Han," and the Han dynasty directly followed the Qin and built upon pre-existing rammed earth walls, it's the most accurate answer among the choices provided.<br />