The main reason for the wall's construction had always been defense. Since China's first dynasty, the empire faced a near-constant threat of attack from the nomadic tribes to the north. This included those famed Mongols as well as lesser-known groups like the Xiongnu and the Göktürks.
I am pretty sure that this question belongs in the maths section not the geography section.
Anyways, the answer is simply to find.
First make sure the units are the same.
Secondly, subtract the first sphere number by the second.
The answer is 35 cubic in.
Hope I helped!!! :)
September 5, 1793 - July 27, 1794
Supply and demand!
If you want a lot of something cause its in high demand.
