The physical evidence in archeology Cao Bang in the late Neolithic - beginning of the period there was an overlap metals mutual movement, with exchanges between the mountains and the plains quite developed. It is the solid floor create unity in diversity of cultures - brilliant Dong Son civilization. Along with other mountain residents, the residents of metal Cao Bang has helped shape the country Van Lang - Au Lac, a Vietnamese national stock of powerful nations. From that old plot - northern mountainous Cao Bang, including the regional distribution of the Dong Son culture, of Van Lang - Au Lac.
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