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 archaeo… - Jim G. Shaffer

Academic discourse in philology, ethnology, archaeology, paleontology, biology, and religion was plumbed in the eighteenth and nineteenth centuries to substantiate a sense of self and shared identity in a newly expanded view of the known geographic world and in a reassessment of a chronology of human antiquity beyond a Biblical interpretation of human origins.

Given these characteristics, a preference for cattle, after 5000 B.C., undoubtedly influenced other social, economic and political rela­tionships, and suggests that cultural developments in South Asia did not simply parallel those in Southwest Asia, where groups did not have a comparable bias.

It is argued that current archaeological data do not support the existence of an Indo-Aryan or European invasion into South Asia at any time in the pre- or protohistoric periods. Instead, it is possible to document archaeologically a series of cultural changes reflecting indigenous cultural development from prehistoric to historic periods. The early Vedic literature describes not a human invasion into the area, but a fundamental restructuring of indigenous society that saw the rise of hereditary social elites.