APPROXIMATELY 6,000-7,000years ago China’s primitive so-ciety gradually progressed toits prosperous period.The body shapeof peopel at that time was entirely thesama as modern people.Primitive agriculture started,people began to raise livestock and live a more sedentary life.Clan villages appeared.However,because of natural disasters and other factors,the primitive people had to constantly change their habitats.Over time,these habitats submerged into ruins,which became bases for archaeologistss in their study of primitive man and his social conditions.
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