The tin sources of antiquity were, for the Mediterranean, western Iberia, western France, and Devon and Cornwall in England. For Iran and Mesopotamia, tin came from Afghanistan, primarily from the area just N, of Kahandar and from the area just W. of Moqor, and might have been a major reason for the prosperity of Shahr-i-Sokhte. Since tin-bronze was first introduced in Palestine during the Intermediate Bronze Age, and the mostly nomadic population of the area had no reason to build port-cities on the Mediterranean, it seems likely that the Intermediate Bronze Age in Palestine was spurred by means of Afghanistan tin, primarily by means of Syrian imports (the Orontes survived the 4.2 ky event).