Which Landmark Initially Ordered To Be Built By Shi Huangdi To Protect China Does This Map Illustrate?

Which Landmark Initially Ordered To Be Built By Shi Huangdi To Protect China Does This Map Illustrate? The Great Wall was built to protect China from invasions. How did Shi Huangdi protect China? Legalism was the official philosophy, and other philosophies, such as Confucianism, were suppressed. Shi Huangdi also built the Great Wall of China,