Question

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Answer 1

Answer:

4)

During the Chalcolithic, or "Copper," Age, significant progress was made in the smelting of copper (hence the name given to this historical epoch)

5)

The Mesolithic period is known as the period of transition as certain advancements such as creation of better stone tools and early domestication of animals were in their early stages and not fully developed until the beginning of the neolithic era.