The Great Wall of China
Overview
What is commonly referred to as the Great Wall of China is actually four great walls rather than a single, continuous wall. The oldest section of one of the four Great...
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For centuries mankind has innovated. The wheel, the sword, the gun, the car. All are inventions that have changed the world. But one construction has no inventor. It was born of pure instinct: the wal...
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The Great Wall of China
