Indus Valley Civilisation

Story hook

In 1856, a railway engineer named John Brunton was laying tracks between Karachi and Lahore. The British contractors discovered a vast mound of perfectly-baked bricks at a place the locals called Harappa, and — because empire ran on convenience — they crushed several kilometres of those bricks into ballast for the Lahore-Multan railway. Beneath that vanishing mound was the second-largest city of a civilisation that had thrived for fifteen hundred years before the Romans built their first hut. We were quite literally walking on ancient India and turning it into railway gravel.

It would take another sixty-five years before anyone realised what had been destroyed. In 1921, Daya Ram Sahni — an Indian archaeologist working for the ASI — formally identified Harappa. A year later, R. D. Banerji excavated Mohenjo-daro a thousand kilometres south, and the world finally understood: India had not been a "junior cousin" of Mesopotamia. Between 2600 and 1900 BCE, the Indus floodplain housed the largest contemporary civilisation on the planet, spanning what is today Pakistan, Punjab, Haryana, Gujarat, Rajasthan and as far east as Uttar Pradesh.

That single sentence is the lens we'll use through this entire topic. The Indus people were not "early Indians stumbling toward civilisation." They were the civilisation. Everything they did — the drainage, the seals, the standardised weights — was world-class for its time.

Why this matters for UPSC

This is one of the highest-yield Prelims topics in Ancient History — UPSC has asked at least 9 questions between 2013 and 2024, ranging from site identification (Lothal's dockyard, Dholavira's water-management) to seal-script puzzles. Mains GS-I has used it in art-and-culture (continuity from Indus to historic India) and Society (early urbanism). Interview boards probe it through Indian heritage and recent finds like Rakhigarhi's aDNA studies.