どうきじだい
銅器時代
1. Copper Age; Chalcolithic
2. ChalcolithicThe Chalcolithic period or Copper Age, also known as the Eneolithic/Æneolithic, is a phase of the Bronze Age in which the addition of tin to copper to form bronze during smelting remained yet unknown by the metallurgists of the times. The Copper Age was originally defined as a transition between the Neolithic and the Bronze Age. An archaeological site in southeastern Europe contains the oldest securely dated evidence of copper making at high temperature, from 7,000 years ago.
Read “Chalcolithic” on English Wikipedia
Read “銅器時代” on Japanese Wikipedia
Read “Chalcolithic” on DBpedia
Read “Chalcolithic” on English Wikipedia
Read “銅器時代” on Japanese Wikipedia
Read “Chalcolithic” on DBpedia
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