Chalcolithic, Prehistoric period, Copper Age.

The Chalcolithic (English: ), a name derived from the Greek: χαλκός khalkós, "copper" and from λίθος líthos, "stone" or Copper Age, also known as the Eneolithic or Aeneolithic (from Latin aeneus "of copper") is an archaeological period which researchers now regard as part of the broader Neolithic. Earlier scholars defined it as a transitional period between the Neolithic and the Bronze Age. In the context of Eastern Europe, archaeologists often prefer the term "Eneolithic" to "Chalcolithic" or other alternatives. In the Chalcolithic period, copper predominated in metalworking technology. Hence it was the period before it was discovered that by adding tin to copper one could create bronze, a metal alloy harder and stronger than either component.
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