Beginning of Essay
The biggest man made structure ever built, is the Great Wall Of China. The Great Wall Of China is a wall that was built during the Chin dynasty. The Emperor during the Qin dynasty, Qin Shihuangdi, gave the order to build the wall. Parts of the enormous structur ....

Middle of Essay
.... The nomads he was especially concerned about were the Hsiung-nu, sometimes thought to be forebears of the Huns. One reason the Great Wall was built was to keep Chinese farmers from leaving their farms,and the second reason was for protection. The wall helped in wars because it provided square stone windows ,which let the soldiers in the wall, fire there weapons at invaders. But sometimes the wall didn't help ,because invaders went around it,or over it. The wall is simple in structure. It is built of dirt, stone, and brick. Its height ranges from 15 to 30 feet (5 to 9 meters), with watchtowers rising at regular intervals above it. It is 15 to ....