Question 4. In the 3rd century BCE in China, the fortifications started to be integrated into a common defensive outwork, known as the (a) Great Wall of China (b) Humen Weiyuan Fort of China (c) Taku Forts of China (d) Wanping Castle of China Answer
In 3rd century BCE in China, the fortifications started to be integrated into a common defensive outwork, known as the. (a) 'Great Wall of China'.
