↑Bronze was independently discovered in the Maykop culture of the North Caucasus as early as the mid-4th millennium BC, which makes them the producers of the oldest known bronze. However, the Maykop culture only had arsenical bronze, a naturally occurring alloy. Other regions developed bronze and its associated technology at different periods.
↑http://164.100.47.132/LssNew/psearch/QResult15.aspx?qref=138704 | "The work on delineation of entire course of river 'Saraswati' in North West India was carried out using Indian Remote Sensing Satellite data along with digital elevation model. Satellite images are multi-spectral, multi-temporal and have advantages of synoptic view, which are useful to detect palaeochannels. The palaeochannels are validated using historical maps, archaeological sites, hydro- geological and drilling data. It was observed that major Harappan sites of Kalibangan (Rajasthan), Banawali and Rakhigarhi (Haryana), Dholavira and Lothal (Gujarat) lie along the River Saraswati ."- Ministry of Space, Government of India.
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