The Indus Valley Civilization

Subject: History | Unit: Ancient India | Topic: Indus Valley Civilization Exam: AP Group 2 (APPSC) — Paper I, Ancient India Prerequisites: None (first chapter in Ancient India unit)

Introduction

The Indus Valley Civilization (IVC), also known as the Harappan Civilization, is the earliest known urban civilization in South Asia and one of the three earliest civilizations in the world, alongside Mesopotamia and Egypt. Spanning approximately 1.2 million square kilometers across present-day India and Pakistan, it was the largest of all Bronze Age civilizations — larger than Mesopotamia and Egypt combined.

For the APPSC Group 2 examination, this is a high-yield topic. Expect 2-3 questions in the Screening Test, typically focused on site-discovery matchings, "which was NOT known" elimination questions, and geographical extent. Mastering the sites table alone can guarantee 1-2 correct answers.

Historical Context

While Mesopotamia was developing along the Tigris-Euphrates and Egypt along the Nile, a parallel civilization was emerging along the Indus and Ghaggar-Hakra river systems in northwestern South Asia. Unlike its contemporaries, the Harappan Civilization left no monumental temples or royal tombs — its hallmarks were urban planning, standardization, and trade networks.

The Three Phases

Discovery Story

The civilization was unknown to modern scholarship until the early 20th century:

• 1826 — Charles Masson, a British deserter, noticed the mounds at Harappa but thought them to be ancient Buddhist ruins.
• 1856 — John Brunton and William Brunton, British railway engineers, used Harappan bricks as ballast for the Lahore-Karachi railway — unknowingly destroying part of the site.
• 1921 — Dayaram Sahni conducted the first systematic excavation at Harappa on the banks of the River Ravi in Punjab, Pakistan.
• 1922 — R.D. Banerji discovered Mohenjo-Daro ("Mound of the Dead") on the banks of the River Indus in Sindh, Pakistan.
• Both excavations were conducted under Sir John Hubert Marshall, Director-General of the Archaeological Survey of India, who recognized these as remnants of a previously unknown civilization.
• Since then, over 1,400 Harappan sites have been identified across India and Pakistan, with major concentrations along the dried-up Ghaggar-Hakra river system (often identified with the Vedic Saraswati).

Core Content

Major Sites — The Complete Reference

This is the single most tested section for APPSC. Every site, its river, discoverer, and unique feature must be memorized.

Geographical Extent

Urban Planning & Architecture

The Harappan cities demonstrate the most advanced urban planning of the ancient world:

City Layout:

• Cities were divided into two distinct zones: a Citadel (western, elevated, fortified) housing administrative and religious structures, and a Lower Town (eastern) where the general population lived and worked.
• The citadel was typically raised on a mud-brick platform, 6-12 meters high, providing both flood protection and a symbol of authority.
• Dholavira was unique with a three-part division — citadel, middle town, and lower town — suggesting a more complex social hierarchy.
• Chanhudaro was the anomaly — it had no citadel at all, suggesting it may have been a specialized craft production center rather than an administrative hub.

Streets and Drainage:

• Streets followed a strict grid pattern, intersecting at right angles — a feature not seen in Mesopotamia or Egypt at this time.
• Main streets were up to 10 meters wide; smaller lanes branched off at right angles.
• Houses were made of standardized burnt bricks in the exact ratio 4:2:1 (length:breadth:height) — this uniformity across sites hundreds of kilometers apart suggests centralized planning authority.
• The covered drainage system was the most remarkable feature: household drains connected to street drains through terracotta pipes, which emptied into larger main drains with inspection manholes at regular intervals. No other ancient civilization had sanitation infrastructure of this sophistication.

The Great Bath at Mohenjo-Daro:

• Dimensions: approximately 12 meters long × 7 meters wide × 2.4 meters deep.
• Constructed of tightly fitted burnt bricks sealed with bitumen (natural tar) — a waterproofing technique.
• Surrounded by a corridor and rooms on all sides, with steps leading down into the pool.
• Most scholars interpret it as a ritual bathing facility — the earliest evidence of the ritual purification practices that remain central to Indian culture today.
• Water was drawn from a well in an adjacent room and drained through a covered outlet.

The Great Granary:

• At Harappa: six granaries in a row, each 15.2m × 6.1m, with air ducts beneath the floor for ventilation and drying.
• At Mohenjo-Daro: a large granary near the citadel, 45.7m × 15.2m.
• These structures suggest state-managed food storage — evidence of a centralized economy.

Weights and Measures:

• Standardized weights based on multiples of 16 (1, 2, 4, 8, 16, 32, 64, 128, 256...).
• Made of chert (a type of stone), cuboid in shape.
• This uniform system across the entire civilization implies a centralized authority that enforced standards — possibly for trade regulation and taxation.

Economy, Agriculture & Trade

Agriculture — The Foundation:

• Agriculture was the primary occupation of the civilization.
• The Harappans were the first civilization in the world to cultivate cotton. The Greeks later called cotton sindon, derived from Sindh — where the civilization flourished.
• Crops grown: wheat, barley, cotton, ragi (finger millet), dates, peas, sesame, mustard, field peas, horse gram.
• Rice cultivation: evidence found at Lothal and Rangpur (Gujarat) — indicating rice was grown in the southern regions.
• Plough agriculture: furrow marks found at Kalibangan indicate the use of a plough (wooden, now decayed), suggesting intensive farming.
• Animal husbandry: cattle (humped bull was the most common motif), buffalo, sheep, goat, pig, dog, cat. Elephants may have been domesticated.

Trade — Internal and External:

• Active trade with Mesopotamia (Sumerians): Harappan seals found at Mesopotamian sites (Ur, Kish, Tell Asmar), and Mesopotamian texts refer to trade with a land called "Meluhha" — believed to be the Indus region.
• Traded items: carnelian beads, lapis lazuli, copper, ivory, timber, cotton textiles.
• Lothal served as the major port — its dockyard (214m × 36m) could accommodate ships entering through a channel connected to the Sabarmati River.
• A Persian Gulf seal found at Lothal confirms maritime trade connections.
• Internal trade routes linked cities across the Indus-Ghaggar basin, evidenced by uniform pottery styles and standardized weights across sites.

Metals, Tools & Technology

Known Metals and Materials:

• Copper and Bronze (copper-tin alloy) — primary metals for tools, weapons, and ornaments.
• Gold and Silver — used for jewelry and ornaments. Gold sources likely from Karnataka (Kolar) and Afghanistan.
• Lead — used for plumb-bobs and weights.
• Steatite (soapstone) — primary material for seals.
• Faience — artificially glazed ceramic, used for beads, bangles, and figurines.

What was NOT Known — Critical for Exam:

Masterpieces of Craftsmanship:

• Bronze Dancing Girl (Mohenjo-Daro): A 10.5 cm figurine of a young girl in a confident posture, wearing bangles on her left arm. Created using the lost-wax (cire perdue) casting technique — evidence of advanced metallurgy.
• Priest-King bust (Mohenjo-Daro): A 17.5 cm steatite sculpture depicting a bearded man wearing a decorated robe and headband. Possibly a ruler or priest — the only portrait-like sculpture found.

Script, Seals & Communication

The Indus Script:

• The Harappan script is pictographic (symbols represent objects/ideas, not sounds).
• It remains undeciphered to this day — making it one of the great unsolved puzzles of archaeology.
• Written in Boustrophedon style: alternating direction — right-to-left on one line, then left-to-right on the next.
• Contains approximately 400-500 distinct signs — too many for an alphabet, too few for a purely logographic system.
• Longest inscription found has only 26 characters — most inscriptions are very short (4-5 signs), typically on seals.
• I. Mahadevan (Indian epigraphist) made the most notable decipherment attempt, suggesting the script is Dravidian.
• Asko Parpola (Finnish scholar) also proposed a Dravidian reading.

Seals:

• Over 3,500 seals have been found across Harappan sites.
• Primary material: steatite (soapstone), square-shaped (2.5 cm × 2.5 cm typical).
• Unicorn (one-horned animal, possibly a bull in profile): the most frequently depicted animal on seals.
• Humped bull (Brahmani bull/zebu): second most common motif.
• Other animals: elephant, tiger, rhinoceros, buffalo, crocodile — notably, no cow (though bull is common).
• Pashupati Mahadeva seal (Mohenjo-Daro): The most famous seal showing a figure seated in padmasana (cross-legged yogic posture), wearing a horned headdress, surrounded by four animals (elephant, tiger, rhinoceros, buffalo), with two deer at the figure's feet. This has been interpreted as Proto-Shiva — connecting the IVC to later Hindu traditions.
• Seals were likely used as identity markers, trade tags, and amulets.

Religion & Social Structure

Religious Practices:

• No temple structures have been found at any Harappan site — unique among ancient civilizations. This suggests worship may have been domestic or communal rather than institutionalized.
• Mother Goddess worship: numerous terracotta female figurines found — some with elaborate headdresses and lamps — suggesting fertility worship.
• Proto-Shiva (Pashupati): the yogic figure seal connects to later Shaivism.
• Nature worship: peepal tree (sacred fig) depicted on seals, doves, fire worship (fire altars at Kalibangan).
• Animal veneration: the unicorn, bull, and other animals on seals suggest totemic or animal worship traditions.
• Possible phallus (lingam) and yoni worship: stone objects resembling these have been found, though interpretation is debated.

Social Structure:

• No evidence of a rigid caste system — in contrast to later Vedic society.
• The relatively uniform house sizes in the lower town suggest a more egalitarian society than Mesopotamia or Egypt, where palaces dominated.
• However, the citadel-lower town division and the Great Granary suggest some form of social hierarchy and centralized authority.
• No evidence of a powerful monarchy or military — no grand palaces, no royal tombs, no monumental military architecture. This suggests governance may have been through a council of merchants/priests rather than a single king.
• Population composition: primarily Proto-Australoid and Mediterranean (Dravidian) types, with smaller Mongoloid and Nordic (Alpine) groups — based on skeletal analysis.

Burial Practices:

• Three types practiced:
  1. Complete inhumation — body placed extended in a wooden coffin (most common at Mohenjo-Daro)
  2. Fractional burial — body exposed to elements/animals first, then bones collected and buried
  3. Cremation followed by urn burial — ashes placed in painted urns (H-Cemetery culture at Harappa, late phase)
• Double burials found at Lothal — a man and woman buried together.
• Burials included grave goods (pottery, ornaments) but no grand tombs — again suggesting relative social equality.

Decline of the Civilization

The decline of the IVC after 1900 BCE is one of the most debated topics in Indian history. The urban features — standardized bricks, planned streets, drainage, writing, weights — gradually disappeared. Cities were abandoned and population dispersed to smaller, rural settlements.

Current scholarly consensus: No single cause explains the decline. A combination of climate change, river drying, and ecological degradation gradually made the urban Harappan way of life unsustainable. The population did not vanish — it dispersed to smaller settlements in the Gangetic plain, Gujarat, and possibly southward.

Andhra Pradesh Connection

While no Harappan sites have been found within present-day Andhra Pradesh, the civilization has significant indirect connections to the region:

Geographical Proximity:

• Daimabad (Ahmednagar, Maharashtra), the southernmost Harappan site, lies deep in the Deccan Plateau — the same geological formation that extends into Andhra Pradesh. The remarkable bronze chariot found at Daimabad (depicting a driver with bull, rhinoceros, elephant, and buffalo) shows Harappan material culture reached well into peninsular India.

The Dravidian Connection:

• Skeletal analysis identifies the majority Harappan population as Proto-Australoid and Mediterranean (Dravidian) types. Many scholars — including I. Mahadevan and Asko Parpola — argue the Indus Script encodes a Dravidian language, the family that includes Telugu.
• If correct, the Telugu-speaking people of Andhra Pradesh may be cultural and linguistic descendants of the Harappan population.
• The 2019 Rakhigarhi DNA study showed no Steppe ancestry in Harappan skeletons, supporting the theory that the civilization's population was indigenous and pre-dates the Indo-Aryan migrations.

Post-Decline Migration:

• The decline of the IVC (post-1900 BCE) led to southward and eastward population migrations. Some scholars trace migration routes through the Deccan into the Krishna-Godavari river valleys — the heartland of Andhra Pradesh.
• The Megalithic culture that later flourished in AP (iron age burial sites in Kurnool, Anantapur, Guntur, and other districts, circa 1000-300 BCE) may represent a cultural phase influenced by these post-Harappan migrations, though it also shows distinct characteristics (iron use, horse domestication) absent in the IVC.

Exam Relevance:

• "Southernmost Harappan site?" → Daimabad, Maharashtra (not in AP — a common trap)
• The Dravidian migration theory is a frequently tested conceptual question
• Know that AP has no direct Harappan sites — this is a "negative question" favorite

Key Points Summary

1. The IVC was the largest Bronze Age civilization (1.2 million sq km), flourishing during 2600–1900 BCE (Mature phase).
2. Harappa (1921, Dayaram Sahni, River Ravi) and Mohenjo-Daro (1922, R.D. Banerji, River Indus) were the first sites discovered under Sir John Marshall.
3. Over 1,400 sites identified; Rakhigarhi (Haryana) is the largest overall; Dholavira (Gujarat) is the largest in India and a UNESCO World Heritage Site (2021).
4. Grid-pattern streets, standardized burnt bricks (4:2:1 ratio), and covered drainage with inspection manholes — the most advanced urban planning of the ancient world.
5. The Great Bath at Mohenjo-Daro (12m × 7m × 2.4m, bitumen waterproofing) — earliest evidence of ritual bathing.
6. Lothal had the world's earliest known dockyard (214m × 36m); rice husks found there.
7. Harappans were the first to cultivate cotton; also grew wheat, barley, ragi, sesame, dates.
8. Iron, Horse, Sugar Cane, and Sword were NOT known — the most frequently asked elimination question.
9. The Indus Script is undeciphered, written in Boustrophedon style, with ~400-500 signs.
10. No temples found anywhere; religion centered on Mother Goddess, Proto-Shiva (Pashupati seal), and nature worship.
11. Unicorn was the most common animal on seals; Pashupati Mahadeva is the most iconic seal.
12. Bronze Dancing Girl (Mohenjo-Daro) demonstrates lost-wax casting; Priest-King bust is the only portrait sculpture.
13. Standardized weights in multiples of 16 suggest centralized trade regulation.
14. Chanhudaro is the only site without a citadel; Kalibangan has fire altars and ploughed fields.
15. Decline caused by multiple factors — climate change, river drying, ecological degradation. Aryan invasion theory is largely discredited.
16. No Harappan sites in AP, but the Dravidian connection links IVC population to South Indian (including Telugu) peoples.

Exam Strategy

How APPSC asks about this topic:

Negative Marking Strategy:

• Site matchings and discoverer questions have definite answers — if you know it, answer confidently. Low risk of negative marking.
• "NOT known" questions: if you're sure of 3 out of 4 options being known, mark the remaining one. Don't guess randomly — the -1/3 penalty makes random guessing unprofitable on a 4-option MCQ.
• For the "largest site" question: be careful — Rakhigarhi is largest overall, Dholavira is largest in India. Read the question carefully.

Time Allocation: ~45-60 seconds per question. Site matching should take 30 seconds if the table is memorized.

Key Terms Glossary