Answer A
Explanation: it gave more power to common people
I think the answer is <span>The branches were equal in power so that no one branch could control the others.</span>
Answer 'A' correctly describes the Great Wall = It was built to protect Qin's empire from foreign invasion.
Apart from defense, the Great Wall included border controls, and regulation of goods. After Qin dynasty, other dynasties had used it, to maintain their territories.