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The Indus Valley Civilization (IVC): Urban Planning, Major Sites & Decline
Key Takeaways (Prelims Catalyst)
- Also Known As: Harappan Civilization (named after type-site Harappa, first discovered site)
- Time Period: Mature Harappan Phase – c. 2600 – 1900 BCE (Peak urban phase)
- Largest Contemporary Civilization: Larger than ancient Egypt and Mesopotamia combined
- Urban Planning: Grid-iron pattern streets (90° intersections), Citadel + Lower Town division, standardized bricks (4:2:1 ratio)
- Iconic Structures: Great Bath (Mohenjo-daro), Great Granary, advanced covered drainage system
- Trade: Called Meluhha in Mesopotamian texts; Lothal had a tidal dockyard
- Art Masterpieces: Bronze Dancing Girl (Lost-Wax technique), Priest-King bust, Pashupati Seal
- Religion: Worship of Mother Goddess, Pashupati (Proto-Shiva), Pipal tree, and animals (esp. unicorn bull)
- Major Sites: Harappa, Mohenjo-daro, Dholavira (largest), Lothal, Kalibangan, Rakhigarhi (largest site)
- Decline Theories: Ecological imbalance, drying of rivers (Ghaggar-Hakra), aridity & monsoon failure (Aryan Invasion Theory rejected)
Table of Contents
1. Overview, Chronology & Geographical Extent
- Nomenclature: Coined by John Marshall as “Indus Valley Civilization”. Also called Harappan Civilization (type-site: Harappa).
- Period: Proto-Historic Period (Bronze Age). Script exists but remains undeciphered.
Chronology (Radiocarbon Dating)
- Early Harappan Phase: c. 3300 – 2600 BCE (Emergence of urban traits)
- Mature Harappan Phase: c. 2600 – 1900 BCE (Peak urbanization and trade)
- Late Harappan Phase: c. 1900 – 1300 BCE (Post-urban decline)
Geographical Boundaries
- North: Manda (J&K) on Chenab River
- South: Daimabad (Maharashtra) on Pravara River
- East: Alamgirpur (UP) on Hindon River
- West: Sutkagan Dor (Pakistan-Iran border) on Dasht River
It was the largest of all contemporary ancient civilizations.
2. Urban Town Planning & Architecture
Urban planning reflects centralized civic governance without clear signs of monarchy.
Key Features
- Two-Tier Town Grid:
- Citadel (Western side): Elevated platform with public buildings, granaries, and elite structures (usually fortified).
- Lower Town (Eastern side): Residential area on a grid-iron pattern with streets intersecting at right angles (90°).
- Standardized Bricks: Uniform ratio of 4 : 2 : 1 (Length : Breadth : Thickness) across the civilization.
- Advanced Drainage: Covered brick/stone drains with manholes for cleaning; every house had private bathrooms.
- Great Bath (Mohenjo-daro): Large public ritual pool with steps, changing rooms, and bitumen lining.
- Granaries: Largest structures (e.g., Great Granary at Mohenjo-daro, 6 parallel granaries at Harappa) with elevated floors and air ducts.
3. Economy, Trade & Agriculture
- Agriculture: First civilization to produce cotton (called Sindon by Greeks). Major crops: wheat, barley, mustard, chickpeas, sesame. Rice found at Lothal and Rangpur.
- Animal Husbandry: Cattle, sheep, goats, pigs, elephants. Horse remains are debated (Surkotada site).
- Weights & Measures: Highly standardized. Lower weights followed binary system; higher followed decimal system.
- External Trade: Called Meluhha in Mesopotamian texts. Trade via Dilmun (Bahrain) and Makan (Oman). Lothal had a massive tidal dockyard.
4. Religion, Art & Culture
- Mother Goddess: Terracotta figurines symbolizing fertility.
- Pashupati Seal: Three-faced, horned deity in yogic posture surrounded by animals (elephant, tiger, rhino, buffalo) — labeled “Proto-Shiva” by John Marshall.
- Phallic Worship: Evidence of Lingam and Yoni symbols.
- Bronze Dancing Girl (Mohenjo-daro): Masterpiece made using Lost-Wax Technique (Cire Perdue).
- Priest-King bust: Steatite sculpture with beard, headband, and trefoil-patterned shawl.
- Burial Practices: Complete burial, fractional burial, and post-cremation urn burial.
5. Major Sites of the Indus Valley Civilization
| Site | Discovered By | Location | Key Findings |
|---|---|---|---|
| Harappa | Daya Ram Sahni (1921) | Punjab, Pakistan (Ravi River) | 6 parallel granaries, coffin burial, Lingam/Yoni symbols |
| Mohenjo-daro | R.D. Banerjee (1922) | Sindh, Pakistan (Indus River) | Great Bath, Great Granary, Bronze Dancing Girl, Priest-King, Pashupati Seal |
| Lothal | S.R. Rao (1954) | Gujarat, India (Bhogavo River) | Tidal dockyard, rice husks, bead-making factory, fire altars |
| Kalibangan | Amalananda Ghosh (1951) | Rajasthan, India (Ghaggar River) | Ploughed field, fire altars, decorative camel bones |
| Dholavira | R.S. Bisht (1967-68) | Gujarat, India (Rann of Kutch) | Three-tier town planning, large water reservoirs, signboard with 10 characters |
| Chanhudaro | N.G. Majumdar (1931) | Sindh, Pakistan (Indus River) | No Citadel; evidence of lipsticks, inkpot, bead-making |
| Rakhigarhi | Amarendra Nath (1997) | Haryana, India (Ghaggar-Hakra) | Largest Harappan site; extensive museum |
| Surkotada | J.P. Joshi (1964) | Gujarat, India | Horse skeletal remains, fortified citadel, pot burials |
6. Decline of the Civilization
The urban centers declined between c. 1900–1700 BCE. Major theories include:
- Ecological Imbalance & River Shifts: Tectonic activity dried up the Ghaggar-Hakra/Sarasvati river system, forcing eastward migration.
- Recurrent Flooding: Heavy silt deposits indicate repeated Indus floods (especially at Mohenjo-daro).
- Aridity & Monsoon Failure: Paleoclimatic evidence shows weakening of the summer monsoon, disrupting agriculture.
- Aryan Invasion Theory: Proposed by Mortimer Wheeler (based on skeletal remains and Rigvedic references). Completely rejected by modern genetic and archaeological evidence.
Practice MCQs for UPSC
Q1. The Indus Valley Civilization is also known as the Harappan Civilization because:
Options:
A) Harappa was the largest site
B) Harappa was the first site to be discovered
C) Harappa had the Great Bath
D) Harappa was located on the Indus River
Answer: B) Harappa was the first site to be discovered
Explanation: Harappa was the first site discovered in 1921, making it the “type-site” of the civilization.
Q2. The Great Bath was discovered at which site?
Options:
A) Harappa
B) Mohenjo-daro
C) Lothal
D) Dholavira
Answer: B) Mohenjo-daro
Explanation: The Great Bath, a large public ritual pool, was found at Mohenjo-daro.
Q3. Which of the following sites is known for having a tidal dockyard?
Options:
A) Kalibangan
B) Dholavira
C) Lothal
D) Rakhigarhi
Answer: C) Lothal
Explanation: Lothal in Gujarat had a massive artificial tidal dockyard connected to an ancient channel of the Bhogavo River.
Q4. The Bronze Dancing Girl was discovered at which site?
Options:
A) Harappa
B) Mohenjo-daro
C) Lothal
D) Kalibangan
Answer: B) Mohenjo-daro
Explanation: The world-famous Bronze Dancing Girl, made using the Lost-Wax technique, was found at Mohenjo-daro.
Q5. Which site is recognized as the largest Harappan site geographically?
Options:
A) Mohenjo-daro
B) Harappa
C) Rakhigarhi
D) Dholavira
Answer: C) Rakhigarhi
Explanation: Rakhigarhi in Haryana is currently recognized as the largest Harappan site by geographical area.
Q6. The Pashupati Seal depicts a deity surrounded by which animals?
Options:
A) Lion, elephant, horse, and deer
B) Elephant, tiger, rhinoceros, and buffalo
C) Cow, bull, snake, and peacock
D) Tiger, lion, horse, and camel
Answer: B) Elephant, tiger, rhinoceros, and buffalo
Explanation: The Pashupati Seal shows a three-faced, horned deity in a yogic posture surrounded by an elephant, tiger, rhinoceros, and buffalo, with two deer near the feet.
Q7. Which of the following is considered a major factor in the decline of the Indus Valley Civilization?
Options:
A) Aryan Invasion (widely accepted today)
B) Ecological imbalance and drying of rivers like Ghaggar-Hakra
C) Foreign invasion by Persians
D) Complete destruction by earthquakes only
Answer: B) Ecological imbalance and drying of rivers like Ghaggar-Hakra
Explanation: Modern scholarship emphasizes ecological factors such as the drying of rivers and weakening of the monsoon as key reasons for the decline. The Aryan Invasion Theory has been largely rejected.
Frequently Asked Questions
Why is the Indus Valley Civilization also called the Harappan Civilization?
It is called the Harappan Civilization because Harappa was the first site to be discovered in 1921, making it the “type-site” of the civilization.
What was the Great Bath and where was it found?
The Great Bath was a large public ritual pool found at Mohenjo-daro. It had steps, changing rooms, and was lined with bitumen to prevent leakage. It is believed to have been used for ritual bathing.
Which site of the IVC had a tidal dockyard?
Lothal in Gujarat had a massive artificial tidal dockyard, confirming the civilization’s maritime trade capabilities.
What is the significance of the Pashupati Seal?
The Pashupati Seal depicts a three-faced, horned deity in a yogic posture surrounded by animals. It has been interpreted as an early form of Shiva (Proto-Shiva) and provides insight into Harappan religious beliefs.
What were the main reasons for the decline of the Indus Valley Civilization?
The main reasons include ecological imbalance, tectonic activity that dried up rivers like the Ghaggar-Hakra, weakening of the monsoon, and recurrent flooding. The earlier theory of Aryan invasion has been largely rejected by modern evidence.
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