Great Wall of China
flickr/betta design
The Great Wall of China built, rebuilt, and maintained between the
5th century BC and the 16th century to protect the northern borders of
the Chinese Empire from the attacks of the Xiongnu tribes. Several walls
have been built that were referred to as the Great Wall. One of the
most famous is the wall built between 220–206 BC by the first Emperor of
China but little of that wall remains. The majority of the existing
wall were built during the Ming Dynasty (1368-1644 AD). The most
comprehensive archaeological survey has recently concluded that the
entire Great Wall, with all of its branches, stretches for 8,851.8
kilometers (5,500.3 miles).
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