 
<translate> Iji zaa ajụjụ a dị n'elu, ahịrịokwu dị mkpa bụ: Akụkọ ihe mere eme nke Great Wall nke China malitere mgbe mgbidi siri ike nke steeti dị iche iche wuru n'oge Oge opupu ihe ubi na oge mgbụsị akwụkwọ (771 - 476 BC) na oge ndị na-alụ ọgụ (475 - 221 BC) jikọtara site na eze ukwu mbụ nke China, Qin Shi Huang, iji chebe ọchịchị Qin ya guzobere ọhụrụ (221 - 206 BC) megide mwakpo nke ndị nomads si n'ime Asia. Azịza ya bụ 771 - 476 BC. <eng> To answer the above question, the relevant sentence is: The history of the Great Wall of China began when fortifications built by various states during the Spring and Autumn (771 -- 476 BC) and Warring States periods (475 -- 221 BC) were connected by the first emperor of China, Qin Shi Huang, to protect his newly founded Qin dynasty (221 -- 206 BC) against incursions by nomads from Inner Asia. The answer is 771 -- 476 BC. 