Great Wall of China or the Great Wall of China is also known in China as the Great Wall Along the 10,000 Li is the longest building ever built by humans, is located in the People's Republic of China. Its length is 6400 kilometers (from the area Sanhai Pass in the east to Lop Nur in the west) and the height of 8 meters in order to prevent the incursion of the Mongols from the north at that time. The width of the top 5 m, while the bottom width of 8 m. Every 180-270 m made a kind of watchtower. High watchtower is 11-12 m.
To make this giant wall, it could take hundreds of years at the time of the various emperors. Initially, Qin Shi-huang is estimated that commence construction of the wall, but according to the research literature, history and records, the wall was already made before the Qin Dynasty stand, precisely was first built in Warring States Period. Emperor Qin Shi-huang continue development and strengthening of the wall that was built earlier.
After the death of Qin Shi-huang, making this wall had been halted and only resumed in Sui Dynasty, the last resumed again at the time of the Ming Dynasty. Form the Great Wall, which we now see is the result of development of the Sun earlier era. The inside of the wall containing soil mixed with bricks and rocks. The top was made the main road to the Chinese cavalry.
Great Wall of China is considered as one of the Seven Wonders of the World. In 1987, this building was included in the list of UNESCO World Heritage Site.
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