Decline: end of the cities, not the people

Detail

De-urbanisation timeline

• By c. 1800 BCE, Cholistan (Hakra) sites abandoned; population shifts eastward/southward into Gujarat, Haryana, western UP.
• In settlements surviving past 1900 BCE: weights, seals, special (etched carnelian) beads, writing, long-distance trade, craft specialisation — all disappear.
• Material decline: fewer/lower-quality materials, worse house construction, no public structures (no more Great Bath–type civic works), standardised weights replaced by local ones.
• Net effect: settlement pattern turns rural; this loss of the unifying "package" (script, weights, seals) is read as the end of the Harappan state, not end of population.
• Gap of over a millennium before next urban phase — Second Urbanisation in the Ganga valley, a different region entirely.

Causes debated

• No single accepted cause; candidates weighed: climatic change, deforestation, excessive floods, river shifting/drying, overuse of landscape — each plausible for some sites, none explains total, civilisation-wide collapse.

• Two factors with wider current acceptance: 1. Climatic shift from c. 2200 BCE — reduced rainfall, drier phase, agrarian stress. 2. Drying of the Sarasvatī in its central basin — directly linked to abandonment of Kalibangan and Banawali.

• External corroboration: mainstream view (non-NCERT) similarly holds no single agreed cause; proposed drivers include gradual climatic/monsoon shift, agricultural stress from population growth and resource overexploitation, and more abrupt theories like tectonic disruption of river courses feeding the Sarasvati/Ghaggar system [2]. Independent isotope/archaeobotanical studies point to a weakening monsoon after c. 5,000 years BP and a shift from wheat-barley to drought-resistant millet cropping around 4,200 years BP as an adaptive response — broadly consistent with (not contradicting) the NCERT climate-shift dating [3].

• No evidence of warfare or invasion: no army, no weapons of war found — a relatively peaceful civilisation by material record.

The invasion thesis and its demolition

• 1925: John Marshall's excavation finds 16 skeletons in "Deadman Lane," Mohenjodaro.
• 1947: Mortimer Wheeler links these to Ṛig Vedic references to pur (forts) and Indra as puramdara ("fort-destroyer") — famous line: "On circumstantial evidence, Indra stands accused."
• 1964: George F. Dales demolishes the thesis in his paper "The Mythical Massacre at Mohenjodaro" — skeletons belong to different chronological periods, burials are sloppy/unceremonial (not battlefield dead), no destruction level, no burnt city, no armoured warriors, no final defence of the citadel [4].
• Dales further characterised the bodies as scattered across the site rather than lying in streets "where they were slain" as Wheeler had suggested, and suggested some may represent later, unrelated deaths (e.g., hill bandits) rather than a single violent event [4].
• Textbook case cited for re-examination reversing an established interpretation in archaeology.

Continuity — the people did not vanish

• Much Harappan culture/technology persists into later Indian civilisation:
• The plough.
• Bangles worn full-arm — still seen in Gujarat/Rajasthan.
• The 'namaste' figurine posture.
• Games and toys.
• The thirsty-crow motif on a Lothal pot.

• Continuing craft traditions.

• Conclusion of the section's framing: decline = end of cities/urban "state" package, not end of the people or their cultural practices.

Prelims Hooks

• Cholistan sites abandoned by c. 1800 BCE; population moved to Gujarat, Haryana, western UP.
• Post-1900 BCE Late Harappan phase: loss of weights, seals, writing, special beads, long-distance trade, craft specialisation.
• Gap of over 1,000 years between Harappan decline and next urbanisation (Ganga valley, Second Urbanisation).
• Two agreed decline factors (Class 6, Ch 6 "The Beginnings of Indian Civilisation"): climate shift from c. 2200 BCE and drying of Sarasvatī (Kalibangan, Banawali abandoned).
• 1925 — Marshall finds 16 skeletons, "Deadman Lane," Mohenjodaro.
• 1947 — Wheeler links Indus decline to Ṛig Vedic Indra as puramdara; "On circumstantial evidence, Indra stands accused."
• 1964 — George Dales, "The Mythical Massacre at Mohenjodaro", refutes invasion thesis.
• Dales' refutation grounds: skeletons of different periods, sloppy burials, no destruction/burn layer, no armoured warriors, no citadel defence.
• No weapons of war/army found at Harappan sites — evidence read as a peaceful civilisation.
• Continuity markers into later India: plough, full-arm bangles (Gujarat/Rajasthan), namaste figurine, thirsty-crow motif (Lothal pot).

Mains Points

• Multi-causal, non-catastrophic decline: contrast the discarded single-cause "Aryan invasion" model with the current preferred explanation — gradual climatic/riverine stress (Sarasvatī drying, post-2200 BCE aridity) causing de-urbanisation rather than sudden violent destruction; useful for GS-I questions on historiographical method and the danger of single-factor determinism.
• Historiography as a live debate: Wheeler (1947) → Dales (1964) is a clean case study of how new excavation/re-analysis overturns prior scholarly consensus — usable to illustrate "sources and their limitations" or "changing interpretations in Indian history."
• Discontinuity of state, continuity of culture: the Harappan "state apparatus" (script, weights, seals, trade networks) ends, but the population and craft/cultural practices persist, feeding into subsequent Indian civilisation — relevant to arguments against a "clean break" model of Indian civilisational history.
• Second Urbanisation linkage: the millennium-long, geographically displaced gap before Gangetic urbanisation is a useful anchor for comparative questions on the two phases of urbanisation in ancient India.