Why is the construction of the Great Wall of China attributed to the Qin dynasty?

          The Great Wall of China is a man-made marvel. The Great Wall took centuries to build. The history of the Great Wall begins during the period of Qin dynasty.

          The Great Wall was built across the northern border to keep out the hostile Huns, and other invaders. The emperor Qin Shih Huang Di, ordered his builders to join up many existing walls along the Chinese northern frontier. The wall extends through mountain ridges, rivers, and plains of China like a giant dragon.

          Built of fired bricks and mortar, the wall is about 6700 kilometres long. It is equipped with shooting platforms and weapon stores. It is between five and eight metres in width, wide enough for the troops and carts to move along it.

          Another project of Qin Shih Huang Di was the terracotta army, which was intended to protect the emperor after his death.