UPSSSC PET · Bite-size lessons

Indus Valley Civilisation

About 7 min · Indian History · English

Time worked out from the lesson's 496 words at 150 words a minute, plus a minute for each question.

The Indus Valley Civilisation (IVC), also called Harappan Civilisation, was one of the world's earliest urban cultures (circa 2500–1900 BCE). It flourished along the Indus and its tributaries, covering modern-day Pakistan and northwest India. For UPSSSC PET, you must understand its urban planning, economy, seals, script, and reasons for decline. Questions typically test factual recall about sites, town planning features, artefacts, and comparative knowledge of contemporary civilisations. Unlike Mesopotamia and Egypt, the IVC had no monumental temples or royal tombs, yet showed remarkable standardisation and civic sense.

Key ideas

• Mature Phase (2600–1900 BCE): The urbanised, standardised phase when major cities like Harappa and Mohenjodaro flourished with grid planning, brick structures, and advanced drainage systems. This is the classical Harappan period.
• Urban Planning Excellence: Cities built on a grid pattern with streets intersecting at right angles, fortified citadels on raised platforms, well-planned residential areas (lower town), uniform burnt brick construction, and sophisticated drainage with covered drains and soak pits.
• Absence of Monumental Architecture: Unlike Egypt (pyramids) or Mesopotamia (ziggurats), IVC lacked grand palaces or temples, suggesting an egalitarian or merchant-oligarchy governance rather than divine kingship.
• Standardisation Across Sites: Uniform brick size ratio (1:2:4), standardised weights and measures (binary and decimal systems), similar pottery styles (wheel-made, red/black), and consistent seals indicate centralized planning or strong cultural integration over a vast area.
• Trade and Economy: Agriculture (wheat, barley, cotton cultivation earliest evidence), domesticated animals (cattle, buffalo, sheep), extensive internal and external trade (Mesopotamia, Central Asia) evidenced by seals, beads, shell objects, and urban marketplaces.

Watch out for

• Confusing site-specific features: Students often mix up which site had what—remember Lothal had dockyard, Mohenjodaro had Great Bath, Dholavira had water reservoirs, Kalibangan had fire altars. Make a site-wise feature chart for quick revision.
• Assuming deciphered script: The Harappan script is not deciphered. Avoid stating "the script says X"—we only know about 400 symbols exist and appear on seals and pottery. Any language family (Dravidian, Indo-Aryan, Austroasiatic) remains hypothesis.
• Invasion theory as fact: The Aryan Invasion Theory for IVC decline is outdated. Modern archaeology favours climatic change (river drying, floods) and gradual migration rather than sudden conquest.

Quick reference

• Major Sites: Harappa (type-site, granaries), Mohenjodaro (Great Bath), Lothal (dockyard), Dholavira (reservoirs), Kalibangan (fire altars), Ropar (dog burial).
• Town Planning: Grid layout, burnt brick construction (1:2:4 ratio), citadel + lower town, covered drains, uniform streets.
• Economy: Agriculture (wheat, barley, cotton), trade with Mesopotamia (seals found in Ur, Kish), bead-making, metallurgy (bronze, copper).
• Seals: Steatite, unicorn/bull motifs, undeciphered script, likely trade/administrative use.
• Decline (1900 BCE onward): Climate change, river shifts (Ghaggar-Hakra drying), floods, resource depletion—not sudden invasion.

Check yourself: 3 questions

This lesson is cut from the topic's note, not rewritten. Fact-checked on 17 Oct 2026: an AI-assisted check of this note against cited sources; the errors it found were corrected that day. Some errors may remain. The questions are from Shishya's validated question bank.

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