It is known that some of Indus Seals found in Mesotopamia. Are those seals found in a single city or variety of Sumer cities? Is there any known another example for 2000 kms distance of a trade network in Bronze Age? Submitted by Taner Tas
Harappan seals from Western and Central Asia come from a number of sites. For a catalogue, map and analysis of sign sequences (which may suggest whether the text written with Indus signs is in Harappan or some other language), see my paper in F. Højlund & H. H. Andersen (eds.), Qala'at al-Bahrain, I (1994). Even earlier large-scale trade networks were those of Uruk period Mesopotamia (extending to Syria, the Causus and Upper Egypt) and the Proto-Elamite network from western Iran to Pakistani Baluchistan). See M. S. Rothman (ed.) Uruk Mesopotamia and its neighbors (2001) and D. T. Potts, The archaeology of Elam (1999).