Around 220 B.C., Qin Shi Huang, the first emperor of a unified China under the Qin Dynasty, ordered that earlier fortifications between states be removed and a number of existing walls along the northern border be joined into a single system that would extend for more than 10,000 li
It helped China because the Empire strengthened and grew China. They also made the Great Wall of China as a defense. He unified China and made his country larger. ... The Emperor of Qin created a unified set of laws because they needed the same set of money, writing, and others to be able to really unify.
