Era of Technology-Chalcolithic
This is known as copper Stone Age. It began approximately 3rd millennium BC. Societies transformed the stone tools to copper tools. Copper is widely used metal because it is mold able into tools without raising its temperature too high.
This is known as copper Stone Age. It began approximately 3rd millennium BC. Societies transformed the stone tools to copper tools. Copper is widely used metal because it is mold able into tools without raising its temperature too high.