However, the very first long-distance trade happened a lot earlier still, around 12,000 BC. It also originated from Mesopotamia, but involved a different export: Obsidian stone . We don’t know why and what it was traded for, but researchers found the rare, black material, that is today often used for decorative elements and in expensive floors, in a cave in Greece, over 2,000 miles away from its source.
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A Splendid Exchange - Book Summary
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