Rivers provided the water that made agriculture possible. Agriculture, in turn, enabled people to settle in one area and to accumulate a food surplus that allowed them to pursue tasks besides growing food, namely, to create a civilization. They chose leaders, such as kings and priests; they built monuments; they devised systems of morality and religion; and they started to trade.
Mesopotamia became the linchpin of ancient international trade. The fertile soil between the Tigris and the Euphrates produced a arge surplus of food; however, it did not support forests to produce the timber necessary to build permanent structures. The region also lacked the mineral resources to make metals. Accordingly, the early inhabitants of Mesopotamia were forced to go abroad and trade their food for other raw materials. They found copper at Magan, an ancient city that lay somewhere in the contemporary state of Oman and, via Magan, traded with people in the Indus Valley for lumber and other finished goods. [See Silk Roads.]
Trade between Mesopotamia and India was facilitated by the small size of the Persian Gulf. Water provided the easiest way to transport goods, and sailors crossed the gulf fairly early, moving out along the coasts of Persia and India until they reached the mouth of the Indus. Merchants and sailors became middlemen who used their position to profit from the movement of goods through the gulf. The people of Magan were both middlemen and suppliers because the city was a source of copper as well as a transit point for Indian trade. Over time, other cities developed that were exclusively entrepôts, or commercial way stations. One of the best known of these cities was Dilmun.
Dilmun probably lay on what is now the island state of Bahrain. Excavations on the island reveal rich burial mounds from the Dilmun period (ca. 4000 to 2000 B.C.). Scholars believe the monuments on the island indicate that residents, in addition to farming, earned money from the East-West trade and that other cities on the gulf coast survived similarly.
The trading cities on the gulf were closely linked to Mesopotamia, reflected in the similarities between the archaeological finds in the two areas. The similar finds suggest that the people of the gulf coast and the people of the Tigris and Euphrates valley developed increasingly complex societies and beliefs.
The people of the gulf coast differed from those of the interior of the Arabian Peninsula. The people in the interior were nomads who had no time to build cities or monuments and no need to develop elaborate social structures. When the desert provided insufficient food for their flocks, the tribes pushed into the date groves or farmlands of the settled towns. Centers on the gulf coast were subject to such nomadic incursions, as were the people of Mesopotamia. As a result, after the second millennium B.C. the gulf began to take on an increasingly Arab character. Some Arab tribes from the interior left their flocks and took over the date groves that ringed the region's oases, while others took up sailing and began to take part in the trade and piracy that were the region's economic mainstays. These nomadic incursions periodically changed the ethnic balance and leadership of the gulf coast.Famous People Biographies
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