Eastern Arabia
Trade

There is both literary and archaeological evidence of extensive trade between Ancient Mesopotamia and the Indus Valley civilization (which most scholars identify with Meluhha). Impressions of clay seals from the Indus Valley city of Harappa were evidently used to seal bundles of merchandise, as clay seal impressions with cord or sack marks on the reverse side testify. A number of these Indus Valley seals have turned up at Ur and other Mesopotamian sites.

The “Arabian Gulf” types of circular, stamped (rather than rolled) seals known from Dilmun appear at Lothal in Gujarat, India, as well as in Mesopotamia. These seals support the other evidence of Dilmun being an influential trading center. What the commerce consisted of is less known; timber and precious woods, ivory, lapis lazuli, gold, luxury goods such as carnelian and glazed stone beads, pearls from the Persian Gulf, and shell and bone inlays were among the goods sent to Mesopotamia in exchange for silver, tin, woolen textiles, olive oil and grains. Copper ingots from Oman and bitumen, which occurred naturally in Mesopotamia, may have been exchanged for cotton textiles and domestic fowl, major products of the Indus region that are not native to Mesopotamia. Instances of all of these trade goods have been found. The importance of this trade is shown by the fact that the weights and measures used at Dilmun were in fact identical to those used by the Indus, and were not used in Southern Mesopotamia.

Mesopotamian trade documents, lists of goods, and official inscriptions mentioning Meluhha supplement Harappan seals and archaeological finds. Literary references to trade with Meluhha date from the Akkadian period (c. 2300 BC), but the trade probably started in the Early Dynastic Period (c. 2600 BC). Some Meluhhan vessels may have sailed directly to Mesopotamian ports, but by the Isin-Larsa Period (c. 1900 BC), Dilmun monopolized the trade. The Bahrain National Museum assesses that its "Golden Age" lasted from c. 2200 BC to 1600 BC.
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