Agro-Pastoral Foundations and Mercantile Networks: A Multi-Proxy Reconstruction of Rakhigarhi's Metropolitan Economy

The enigmatic resilience and sustained prosperity characterizing the Harappan Civilization (c. 2600–1900 BCE) have perennially captivated the academic imagination, with the specific subsistence mechanisms of its paramount metropolis, Rakhigarhi, constituting a particularly opaque domain within South Asian archaeology. This seminal study undertakes a grand synthesis of emergent archaeological, bioarchaeological, and archaeogenetic data to proffer a comprehensive reconstruction of the sophisticated, multi scalar economic system that constituted the foundational bedrock of Rakhigarhi’s enduring urban sustainability. Site’s extraordinary longevity was predicated upon a meticulously diversified agro pastoral regime, which strategically amalgamated winter cereals Triticum aestivum (bread wheat) and Hordeum vulgare (barley) with a suite of drought resilient summer millets, notably Pennisetum glaucum (pearl millet) and Sorghum bicolor. This robust agricultural core was synergistically integrated with a multi purpose pastoral economy, fundamentally centered upon the exploitation of Bos indicus (zebu cattle) for traction and dairy, and further augmented by a substantial, systematic reliance on the fluvial resources of the paleo Ghaggar Hakra riverine system. The recent revelations from ancient DNA analysis, which confirm the profoundly indigenous origins of the population, provide the ultimate corroboration, underscoring the autochthonous development of these sophisticated adaptive strategies. We contend, therefore, that the "Rakhigarhi Model" delineates a novel paradigm for comprehending Harappan urban sustainability, effectively reframing this civilization not as a monolithic, homogenous entity but as a vibrant, interconnected network of resilient, regionally-optimized economies. This investigation emphatically concludes that Indus prosperity was not a mere function of agricultural surplus but the emergent property of strategic economic diversification and profound, multi modal integration