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They perfected tool-making and ussed smaller stone chips for carving. They began using other materials, like bone, and created new utensils : knives, arrowheads, harpoons for fishing, and sewing needles.
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This was the longest of the three periods. The hominids learnt to carve stone. These tools are called bifaces.
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The first spirituals and artistic expressions appeared. They made stone figures representing Venus, the goddess of fertility
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Copper tools and weapons were very fragile.
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Bronze, an alloly of copper and tin, was more resistant. They used it to make farming tools and sophisticated weapons.
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Iron was more abundant and resistant than the previous metals.
