In the Earliest Cities

This foundational section introduces the Harappan/Indus Valley Civilization (c. 2300–1700 BCE) and contrasts it with earlier settlements. UPSC has repeatedly asked about the chronology and spatial extent of Harappa (spanning modern Pakistan and northwest India across ~1.5 million sq km). Key testable facts: distinction between pre-urban settlements (like Mehrgarh) and planned cities (Mohenjo-daro, Harappa); the term 'civilization' itself—marked by script, cities, and standardization. Avoid confusion between Harappan and Vedic periods; they overlapped but represented different societies. Trap: mistaking Harappa's dates with Vedic Aryans' entry (a controversial chronological debate).

Urban design of Mohenjo-daro and Harappa—grid layout, brick buildings, citadels, lower towns, drainage systems—directly tests knowledge of archaeological evidence and engineering sophistication. UPSC values specifics: burnt-brick construction (not mud), uniform brick sizes (43×21×14 cm standard), underground sewage, public baths (the 'Great Bath'), and granaries. These are signature markers of Harappan civilization used in MCQs to distinguish from other Bronze Age societies. Do NOT over-focus on artistic renderings; focus on structural elements and their purpose (hygiene, storage, administration). Recurring trap: confusing Harappan 'citadels' (fortified administrative/ritual zones) with forts of later periods.

Standardized weights and measures (binary and decimal systems), seals with pictographic script, and evidence of long-distance trade (with Mesopotamia, Gulf, Afghanistan) are high-yield UPSC topics. Exact testable details: cubical stone weights, standardized terracotta/stone measures, seal inscriptions (undeciphered script direction—right to left), and trade goods (lapis lazuli, carnelian, cotton). UPSC has asked whether Harappan script is deciphered (answer: still undeciphered despite attempts). Skip artistic interpretations of seals; focus on what they reveal about commerce and administration. Trap: assuming Harappan script is related to Brahmi or Devnagari (no established link proven).

Evidence of specialized craft production (pottery, metalwork, stone tools), staple crops (wheat, barley, millets, cotton), and domesticated animals (cattle, buffalo, sheep, goats—but notably NO horses in Harappan context, unlike later Vedic period) provide archaeological insight into economy and daily life. UPSC may ask about animal absence (horses) as a distinguishing factor from Vedic Aryans. Focus on cotton cultivation (unique to Harappa region at this time) and craft standardization suggesting occupational specialization. Lower priority than urban planning; included mainly for holistic understanding of civilization's material base.

The undeciphered Harappan script—its pictographic nature, brief inscriptions (mostly on seals), directionality (right to left or boustrophedon), and failed decipherment attempts—is a recurring UPSC theme testing knowledge of archaeological limitations. Key fact: script has ~400–600 signs; no Rosetta Stone equivalent exists. UPSC distinguishes between 'script' (writing system) and 'language' (what it represents—unknown). Avoid claiming decipherment; multiple false claims (Tamil, Indo-Aryan hypotheses) exist but lack consensus. Trap: confusing Harappan pictographic signs with later Brahmi script or assuming linguistic continuity with Indo-Aryans.

Sudden decline (c. 1700 BCE) and contested theories of collapse—environmental change (Indus river shift, droughts), invasions (discredited 'Aryan invasion' model), or internal factors—are extensively tested. UPSC emphasizes that no single cause is proven; evidence suggests ecological stress (clay tablets showing drying riverbeds). Avoid the outdated 'Aryans destroyed Harappa' narrative; modern scholarship rejects this. Key testable points: cities were abandoned gradually, no mass destruction layer in all sites, and shift of population eastward (Ganges valley). Trap: conflating Harappan decline with Vedic Aryan arrival (chronologically debated; both may have coexisted in later phases).