A cultural tradition refers to persistent configurations o f basic technologies and cultural systems as well as structure within the context of tempo… - Jim G. Shaffer

The shift by Harappan groups, and perhaps, other Indus Valley cultural mosaic groups, is the only archaeologically documented west-to-east movement of human populations in South Asia before the first half of the first millennium BC.

It is currently possible to discern cultural continuities linking specific prehistoric social entities in South Asia into one cultural tradition. This is not to propose social isolation nor deny any outside cultural influence. Outside cultural influences did affect South Asian cultural development in later, especially historic, periods, but an identifiable cultural tradition has continued, an Indo-Gangetic Cultural Tradition linking social entities over a time period from the development of food production in the seventh millennium BC to the present.

The modern archaeological record for South Asia indicates a history of significant cultural continuity; an intrepretation at variance with earlier eighteenth through twentieth-century scholarly views of South Asian cultural discontinuity and South Asian cultural dependence on Western culture influences.