The gradual reduction in size, a phenomenon associated with domesti­cation, and the occurrence o f wild progenitors in earlier levels, indicate that … - Jim G. Shaffer

Taken together, the above traits establish that despite significant differences, urban developments in the Indus-Sarasvatī and Ganges regions do belong to ‘a single Indo-Gangetic cultural tradition which can be traced for millennia’; in the words of Jim Shaffer, ‘a continuous series of cultural developments links the so-called two major phases of urbanization in South Asia’, the Harappan and the historical. His conclusion is plain: ‘the essential of Harappan identity persisted’.

The concept of an Indo-European or Indo-Aryan group of peoples has played a prominent role in interpretative studies of Old World history and archaeology. For almost 200 years, scholars and quasi scholars have attributed the linguistic, cultural, and racial affiliations of very disparate groups to a common Indo-Aryan heritage. In such widely seperated areas as Europe and India, many significant cultural changes recorded for the first and second millennia B.C. are attributed to an influx, or invasion, of Indo-Aryan peoples who shared a common cultural base and who were responsible for important socioeconomic and linguistic changes in the areas they invaded.

These factors suggest, given the increasingly arid savanna ecology of the Grea­ter Indus Valley after ca. 4000 B.C., that this continued preference for cattle was a deliberate cultural decision by the social groups in the area, and that cattle were objects of important cultural wealth.