What metal did primitive people learn to process first?

Primitive people first of all learned how to work copper. This happened around 7 thousand BC. From what this period of time was named the Copper-Stone Age. So people gradually began to make their tools of labor from metal. Then 3500 BC they were able to learn how to smelt bronze, and even later they mastered iron. Each of the technological breakthroughs meant a transition to a new era.



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