Question

the great wall of china -​ chronology​

Answer 1

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The construction of The Great wall started in the Spring and Autumn Period (770 – 476 BC) and went on until the Ming Dynasty (1368-1644), a time span of 1,800 years. Its building involved some 20 states and dynasties.

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Answer 2

Answer:

The Great Wall of China is the series of walls and fortifications running across the China’s historical northern borders in an east-west line. These walls were built to serve as the country’s defence against the invasions and raids from the different migratory tribes living in the Eurasian Steppe like the Mongols and Russians. The entire Great Wall of China is said to be 21,196 km (13,171 mi) in length.