Mauryan Empire (322 BCE - 185 BCE)
Comprehensive UPSC Prelims Notes covering the rise, administration, culture, and decline of India's first major empire spanning 137 years
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Sources of Mauryan History: Literary Sources
Indigenous Sources
Arthashastra by Kautilya/Chanakya/Vishnugupta - Treatise on statecraft, economics, military strategy with 15 books and 180 chapters
Indica by Megasthenes - Greek ambassador's account; original lost, fragments preserved in other works
Mudrarakshasa by Vishakhadatta - Sanskrit drama from 4th-5th century CE describing Chandragupta's rise
Foreign Sources
Indica by Megasthenes - Social conditions, administration, Pataliputra description
Fragments by Strabo, Arrian, Diodorus, Plutarch, Justin - Preserved Indica's fragments
Naturalis Historia by Pliny the Elder - Trade relations and natural resources
The Arthashastra: Key Details
Discovery and Structure
Discovery: R. Shamasastry discovered it in 1905
Publication: First published in 1909
Structure: 15 Adhikaranas (books), 150 chapters, 6000 shlokas
Content and Significance
Content: Deals with 7 elements of state (Saptanga theory)
Authenticity debate: Some scholars date it to early centuries CE
Comprehensive treatise covering administration, taxation, military strategy, diplomacy, and governance principles
Archaeological Sources: Ashokan Inscriptions
Scripts Used in Ashokan Inscriptions
Brahmi Script
Region: Most of India
Direction: Left to right
Deciphered by: James Prinsep in 1837
Most widely used script across the empire for inscriptions
Kharosthi Script
Region: Northwest (Gandhara)
Direction: Right to left
Origin: Derived from Aramaic
Used in regions with Persian influence
Greek and Aramaic
Region: Kandahar, Afghanistan
Type: Bilingual inscriptions
Used in areas with Hellenistic populations
Material Remains of Mauryan Period
Northern Black Polished Ware (NBPW)
Luxury pottery with distinctive glossy black finish, indicating advanced ceramic technology and urban prosperity
Punch-marked Coins
Silver and copper coins with multiple punch marks, representing standardized currency system
Remains at Pataliputra
Wooden palisade, pillared hall at Kumrahar, demonstrating sophisticated urban planning
Ring Wells
Advanced water storage systems showing engineering capabilities
Rise of the Mauryan Empire: Political Background
Pre-Mauryan Situation
Nanda Dynasty ruled Magadha with Dhana Nanda as the last ruler
Dhana Nanda was unpopular due to:
  • Low origin (Shudra)
  • Heavy taxation
  • Oppressive rule
Alexander's Invasion (327-325 BCE)
Created power vacuum in northwest India
Left behind Greek governors in conquered territories
Weakened small republics and kingdoms, creating opportunity for consolidation
Chandragupta's Origin: Different Traditions

Important: The term "Maurya" may derive from Mura (mother's name), Moriya (clan name - peacock-rearers), or Mayura (peacock symbol)
Chandragupta Maurya (322-298 BCE): Rise to Power
Chandragupta's strategic rise to power was orchestrated through careful planning and military campaigns, transforming him from a young warrior to the founder of India's first major empire.
Alliance with Chanakya
The Master Strategist
Chanakya (also known as Kautilya/Vishnugupta) was a Brahmin from Taxila
Insulted by Dhana Nanda at his court, he vowed revenge
Met young Chandragupta and recognized his potential
Trained him in statecraft, military strategy, and governance
Raised army from frontier regions to challenge Nanda power
War with Seleucus Nicator (305 BCE)
Extent of Chandragupta's Empire
North
Hindu Kush mountains
South
Up to Karnataka (excluding Tamil kingdoms)
East
Bengal
West
Baluchistan, Afghanistan
Total Area: Approximately 50 lakh sq. km - the largest empire in Indian history up to that time
Megasthenes' Account of Pataliputra
City Dimensions
Situated at confluence of Ganga and Son rivers
Length: 14.5 km long
Width: 2.4 km wide
Gates: 64 gates
Towers: 570 towers
Wooden palisade surrounded the city for protection
Administration
6 committees of 5 members each for city administration (total 30 members)
No slavery according to Megasthenes (debated by historians)
Well-organized army and spy system
Sophisticated urban planning and governance
Megasthenes' Seven Social Classes
01
Philosophers
Brahmins and Shramanas; spiritual leaders and teachers
02
Farmers
Cultivators; largest group in society
03
Soldiers
Military personnel and warriors
04
Herdsmen
Herders and dairymen
05
Artisans
Craftspeople and manufacturers
06
Magistrates
Administrative officials
07
Councillors
Advisors to king; nobility
Chandragupta's Later Life and Death
1
Conversion to Jainism
Embraced Jain faith under guru Bhadrabahu
2
Migration South
Migrated to Shravanabelagola in Karnataka
3
Sallekhana
Performed ritual fast unto death (Sallekhana)
4
Legacy
Chandragiri Hill named after him
Bindusara (298-273 BCE): Basic Information
Bindusara's Diplomatic Relations
With Seleucid Empire
Deimachos - Greek ambassador sent by Antiochus I
Bindusara's requests to Greek king:
  • Sweet wine
  • Dried figs
  • A Sophist (philosopher) - request denied humorously
With Ptolemaic Egypt
Dionysius - Egyptian ambassador at Mauryan court
Maintained diplomatic ties with major Hellenistic powers
Continued father's policy of international engagement
Bindusara's Military Campaigns and Administration
Territorial Expansion
Extended empire to the Deccan region
Conquered territories up to Mysore
Left out: Kalinga and Tamil kingdoms (Chola, Pandya, Chera, Satyaputras, Keralaputras)
Provincial Governance
Appointed princes as governors:
Ashoka - Governor of Ujjain (later Taxila)
Susima - Crown prince, Governor of Taxila
Ashoka the Great (273-232 BCE): Early Life

Governorships: First posted to Ujjain where he married Devi (a merchant's daughter); later sent to Taxila to suppress revolt
Ashoka's Succession and War of Succession
The four-year gap between Bindusara's death and Ashoka's coronation indicates a violent succession struggle, with Buddhist tradition symbolically mentioning 99 brothers killed.
The Kalinga War (261 BCE)
Background and Context
Kalinga (modern Odisha) - independent since Nanda times
Strategic importance: Control over land and sea routes
Timing: Fought in 8th year of Ashoka's reign (261 BCE)
Rock Edict XIII Statistics
Killed: 1,00,000 (one lakh)
Died from wounds/famine: Many times that number
Deported: 1,50,000 (one and half lakh)
Impact of Kalinga War on Ashoka
Before Kalinga
Military conquest (Digvijaya)
Aggressive expansion policy
Transformation
Profound remorse and guilt
Spiritual awakening
After Kalinga
Conquest by righteousness (Dhammavijaya)
Conversion to Buddhism
Policy of non-violence

Critical Analysis: Kalinga war was the LAST military campaign. Army was NOT disbanded. Military preparedness continued. Policy change was more ethical than practical pacifism.
Ashoka's Conversion to Buddhism
Third Buddhist Council
Venue
Pataliputra
Year
250 BCE (17th year of Ashoka's reign)
President
Moggaliputta Tissa
Purpose
Purify Sangha, compile Abhidhamma Pitaka
Text Compiled
Kathavatthu
Spread of Buddhism: Ashoka's Missionaries
Ashoka's Lumbini Pilgrimage
Historical Significance
Visited in 20th regnal year of his reign
Erected pillar inscription marking Buddha's birthplace
One of the most important Buddhist pilgrimage sites
Tax Concessions
Reduced tax to 1/8th (from 1/6th)
Declared village "Lummini" tax-free
Demonstrated royal patronage and reverence
Major Rock Edicts: Locations
Content of Major Rock Edicts (I-VII)
Edict I
Prohibition of animal sacrifice and festive gatherings
Edict II
Medical treatment for humans and animals; planting of trees and herbs
Edict III
Respect to parents, teachers; Yuktas, Rajukas, Pradesikas to tour every 5 years
Edict IV
Dhamma policy replaced Bherighosa (war drum) with Dhammaghosa (sound of Dhamma)
Edict V
Appointment of Dhamma Mahamatras (13th regnal year)
Edict VI
Welfare measures; king accessible at all times
Edict VII
Religious tolerance for all sects
Content of Major Rock Edicts (VIII-XIV)
Edict VIII
Dhamma Yatras replaced pleasure tours (Viharayatras)
Edict IX
Criticism of meaningless ceremonies; promotion of Dhamma ceremonies
Edict X
Dhamma (righteousness) is the highest; no value in fame/glory
Edict XI
Elaboration of Dhamma policy
Edict XII
Religious tolerance; growth of essence of all religions
Edict XIII
Kalinga war; its impact; Dhammavijaya
Edict XIV
Summary of all edicts; different lengths for different purposes
Minor Rock Edicts: Key Locations
Bhabru (Bairat) Edict: Special Significance
Unique Features
Only inscription addressed to Buddhist Sangha
Ashoka declares faith in Buddha, Dhamma, Sangha
Personal religious declaration by the emperor
Seven Buddhist Texts Recommended
  1. Vinaya Samukase
  1. Aliya Vasani
  1. Anagata Bhayani
  1. Muni Gatha
  1. Moneyasute
  1. Upatisa Pasine
  1. Laghulovade
Pillar Edicts: Major Locations
Content of Pillar Edicts
01
Pillar Edict I
Principle of protecting people like father protects children
02
Pillar Edict II
Definition of Dhamma
03
Pillar Edict III
Avoiding sins of cruelty, harshness, anger, pride
04
Pillar Edict IV
Duties of Rajukas
05
Pillar Edict V
List of protected animals and birds; rules about their treatment
06
Pillar Edict VI
Policy of Dhamma and welfare
07
Pillar Edict VII
Dhamma and its propagation; Dhamma Mahamatras
Sarnath Lion Capital: India's National Emblem
Physical Features
4 Lions facing cardinal directions
Abacus with wheel (Chakra), bull, horse, elephant
Height: Approximately 2.2 meters
Material: Polished sandstone from Chunar quarry
Symbolic Meaning
Lion: Royalty and power
Chakra: Dharma and righteousness
Elephant: Non-violence and wisdom
Current Location: Indian Museum, Kolkata
Cave Inscriptions: Barabar Hills
Nagarjuni Hills: Three caves with later inscriptions by Dasharatha (Ashoka's grandson)

These are the oldest rock-cut structures in India, demonstrating advanced architectural techniques and influencing later cave temples at Ajanta and Ellora.
Bilingual Inscriptions
Kandahar (Shar-i-Kuna)
Languages: Greek and Aramaic
Country: Afghanistan
Demonstrates Ashoka's reach into Hellenistic territories
Laghman
Language: Aramaic
Country: Afghanistan
Shows adaptation to local linguistic traditions
Ashoka's Dhamma: Nature and Sources
Ashoka's Dhamma was a <b><u>unique ethical code</u></b> that <b><u>transcended religious boundaries</u></b>, drawing from <b><u>multiple philosophical traditions</u></b> to create a <b><u>universal moral framework</u></b>.
Core Principles of Dhamma
Main Features of Dhamma
Respect and Obedience
To parents, elders, teachers
Proper treatment of Brahmins and Shramanas
Kindness to servants and slaves
Non-Violence (Ahimsa)
Prohibition of animal sacrifice
Regulated slaughter
Medical care for animals
Protection of various species
Religious Tolerance
"Bahujan Hitaya, Bahujan Sukhaya" - For the welfare and happiness of many
Growth of essence of all religions
No condemnation of other sects
Welfare Activities
Wells dug along roads
Rest houses constructed
Trees planted
Medical facilities for humans and animals
Machinery for Propagation of Dhamma
Methods of Dhamma Propagation
Tours (Dhamma Yatras)
Royal and official tours to spread message
Inscriptions
Edicts carved in public places
Officials
Dedicated officers spreading the message
Buddhist Missions
Missionaries sent abroad
Purpose of Dhamma: Scholarly Views
The purpose of Dhamma served both political objectives (unification of diverse empire, preservation of social order, conflict resolution between sects) and social objectives (reduce Brahmanical ritualism, promote ethical conduct, create common moral framework).
Mauryan Central Administration: The King
Royal Authority
Supreme authority in executive, legislative, and judicial matters
Titles: Devanampiya, Piyadasi, Raja
Not divine: "Servant of the people" concept
Advisory Body
Council of Ministers (Mantri Parishad)
Advised king on policy matters
Implemented royal decisions
Maintained administrative continuity
Important Central Officials
Arthashastra's 18 Tirthas (High Officials)
1. Mantrin
2. Purohita
3. Senapati
4. Yuvaraja
5. Dauvarika
6. Antarvamsika
7. Prashastr
8. Samaharta
9. Sannidhata
10. Pradeshta
11. Nayaka
12. Karmantika
13. Mantri-parishad-adhyaksha
14. Dandapala
15. Antapala
16. Durgapala
17. Atavika
18. Pradeshtri
Superintendents (Adhyakshas)
The Arthashastra mentions 27 Adhyakshas (superintendents) managing various departments:
Provincial Administration

Provincial Officials: Kumara (Prince-governor), Aryaputra (Royal officer lower than Kumara), Mahamatras (High officials)
District and Village Administration
District Level
Janapada: District
Pradeshika/Sthanika: District officer
Rajuka: Revenue and judicial officer
Yukta: Subordinate revenue officer
Village Level
Gramika/Gramani: Village headman
Gopa: In-charge of 5-10 villages; maintains records
Sthanika: In-charge of 1/4th of Janapada
Village assemblies had significant autonomy
City Administration: Pataliputra's Six Committees
Megasthenes described 6 Committees with 5 members each (total 30 members):
01
1st Board
Industries and crafts
02
2nd Board
Foreigners (welfare, registration, protection)
03
3rd Board
Registration of births and deaths
04
4th Board
Trade and commerce; weights and measures
05
5th Board
Manufactured goods; quality control
06
6th Board
Collection of 1/10th tax on sales
Judicial Administration

Ashoka's Judicial Reforms: 3 days respite before execution, uniform judicial procedure, annual amnesty on coronation anniversary, humane treatment advocated
Military Administration: Army Structure
Megasthenes' Account
Infantry: 6,00,000
Cavalry: 30,000
Elephants: 9,000
Chariots: 8,000
Military Board
6 Committees of 5 members each
Functions: Admiralty (Navy), Infantry, Cavalry, Chariots, Elephants, Supply/Commissariat
Arthashastra's Army Classification
Maula
Hereditary army
Bhrta
Mercenary/Hired
Shreni
Guild levies
Mitra
Army of allies
Amitra
Enemy army won over
Atavi
Forest tribes
Mauryan Taxation System
Tax Collection: Samaharta (Chief tax collector), Gopa (Village-level collection), Regular audits prevented corruption, Severe punishment for tax evasion
Agriculture and Irrigation
State Control
Sitadhyaksha: Superintendent of agriculture
State ownership of waste lands
Encouragement of cultivation
Land grants for Brahmins and officials
Agricultural Products
Wheat, rice, barley, millet
Oil seeds
Sugarcane
Indigo (important export)
Irrigation: Dams, tanks, canals constructed; Well-digging mentioned in Rock Edicts; Megasthenes describes fertile Gangetic plain
Industries and Crafts
Artisan Organization: Guilds (Shreni) organized by craft, Quality control maintained, Guilds arbitrate disputes, State regulation through Adhyakshas
Trade and Commerce
Domestic Trade
Tax on goods: 1/10th of value
Road safety regulations
Standard measures enforced
Regulated markets with fixed prices
Major Ports
Bharuch (Barygaza): Arabian Sea
Tamralipti: Bay of Bengal
Trade with Sri Lanka, Egypt, Greece
Exports
Indigo, Silk, Spices, Pearls, Gems, Sandalwood, Incense, Cotton fabric
Imports
Greek pottery, Tin, Horses, Persian handicrafts
Monetary System
Coinage Features
Punch-marked coins: Silver and copper; irregular shape; multiple marks
Royal symbols: Lion, bull, elephant, tree, chakra
Denominations: Various sizes and weights
Standardization: Attempted by Mauryas
Lakshanadhyaksha: Mint superintendent controlling currency
Mauryan Society: Social Structure
Megasthenes' classification was based on occupation rather than the traditional varna system, with some debate about hereditary nature and social mobility.
Family and Women's Status
Notable Women of Mauryan Period
Devi
Ashoka's wife from Vidisha; mother of Mahendra and Sanghamitra
Sanghamitra
Buddhist nun; carried Bodhi sapling to Sri Lanka
Karuvaki
Ashoka's wife; mother of Tivara; mentioned in Queen's Edict
Urban Life: Major Cities
Major Cities: Pataliputra (Capital; largest city with estimated 400,000+ population), Ujjain (Provincial capital; important trade center), Taxila (Northwestern city; educational hub), Tamralipti (Port city), Bharuch (Trade center), Varanasi, Mathura, Sanchi
Urban Features: Fortifications with wooden palisade, gates, towers; Streets in grid pattern with wide thoroughfares; Organized bazaars; Professional guilds; Craft zones; Entertainment facilities; Advanced water supply systems
Rural Life and Village Organization
Village Governance
Autonomous village communities (Savarna Panchayats)
Elders' council (Panchayat)
Gram Sabha (Village assembly)
Shared irrigation resources
Collective defense militia
Agricultural Cycle
Three crops possible in Gangetic plain
Seasonal labor from landless workers
Zamindar system NOT yet established
Tenant cultivators paid in kind
Religious Life in Mauryan Period
Brahmanical Tradition
Ritual sacrifice (Yajna) continued but regulated
Brahmin status high in society
Vedic learning valued
Buddhism
Royal patronage (especially under Ashoka)
Sangha well-organized
Monasteries established
Lay followers increasing
Other Sects
Ajivikas: Royal patronage under Bindusara
Jains: Some royal connections
Lokayata: Materialist philosophy
Religious Tolerance
Ashoka's Dhamma policy protected all sects
Different sects coexisted peacefully
Minimal persecution
Mauryan Art Characteristics
Materials
Polished stone (sandstone, granite)
Monolithic structures
Ashlar masonry
Wood (limited remains)
Features
Geometric precision
Greek influence in some elements
Blend of Indian and foreign styles
Mirror-like polish on pillars
Mauryan Architecture: Palaces and Stupas
Pataliputra Palace (Kumrahar)
Wooden construction with stone foundations
64 wooden pillars in Pillar Hall
Wooden palisade fortifications
Possibly inspired by Achaemenid models
Sanchi Stupa
Started in Mauryan period; completed later
Hemispherical dome form
Stone slab casing
Symbolic of Buddha (Dhammakaya)
Mauryan Pillars: Technical Features
Barabar Hills Caves: Architectural Significance
1
Construction
4 caves plus temple; rock-cut architecture
2
Features
Polished interior surfaces; barrel-vaulted roofs
3
Donors
Ashoka and Dasharatha for Ajivikas
4
Legacy
Oldest rock-cut structures in India; influenced Ajanta-Ellora
Mauryan Sculpture
Important Sculptures
Lion Capital (Sarnath): 4 lions; national emblem
Bull Capital (Rampurva): Single bull; majestic appearance
Chakra (Wheel): Symbol of Dhamma; 24 spokes
Yakshas/Yakshis (Didarganj): Female figure; feminine beauty
Male Torso (Lohanipur): Greek anatomical influence
Decline of Mauryan Empire: Political Causes
Economic and Religious Causes of Decline
Economic Causes
Ashoka's welfare spending on monasteries and medical facilities
Tax reduction in conquered regions
Trade disruption and loss of control over routes
Currency debasement with reduced silver content
High military expenditure
Religious Causes
Anti-Brahmin policy generated resentment
Division of royal patronage among sects
Vedic revival counter-movement
Sangha's wealth generated resentment
Ashoka's non-violence seen as weak governance
Later Mauryan Rulers
External Pressures and Internal Disintegration
Greek Invasions
Diodotus I established Bactrian kingdom
Menander invaded northwest
Greek colonies in Punjab
Regional Kingdoms
Satavahanas rose in Deccan
Tamil kingdoms independent
Kalinga reasserted independence
Fragmentation
Regional governors autonomous
Tax revenue stopped
Administrative control lost
End of Mauryan Empire
The Mauryan Empire ended in 185 BCE after nearly 150 years of rule (322-185 BCE), leaving a lasting legacy as the most extensive empire in Indian history up to that time.
Important Facts for UPSC Prelims
137
137 Years of Mauryan Rule
322-185 BCE
41
Ashoka's Reign
Longest among Mauryan emperors (273-232 BCE)
14
14 Major Rock Edicts
Found at 8 places across empire
1837
1837 Brahmi Decipherment
James Prinsep deciphered Brahmi script
50
50 Lakh Sq. Km
Approximate area of empire at peak
500
500 War Elephants
Given by Chandragupta to Seleucus
Later Mauryan Rulers

Total Duration: 137 years (322-185 BCE)
Territorial Extent at Different Periods
Under Chandragupta
North: Hindu Kush
South: Northern Deccan
East: Bengal
West: Afghanistan, Baluchistan
Approximate area: 50 lakh sq. km
Under Bindusara
Expansion: South Deccan conquest
Held: Most of subcontinent except southern tip
Peak territorial extent
Under Ashoka
Maximum control achieved
Kalinga: Conquered but maintained
Remote regions: Diplomatic relations (Chola, Pandya)
Area: Approximately 30 lakh sq. km (consolidated)
After Ashoka
Gradual loss: Especially after 200 BCE
By 185 BCE: Reduced to Magadha region only
Northern provinces: Lost to Greeks
Southern territories: Lost to local kingdoms
Important Facts for UPSC Prelims: Chronology
Mauryan Empire Duration
322-185 BCE
Total: 137 years
Chandragupta's Reign
24 years (322-298 BCE)
Bindusara's Reign
25 years (298-273 BCE)
Ashoka's Reign
41 years (273-232 BCE)
Longest among Mauryans
Kalinga War
8th regnal year of Ashoka
Approximately 261 BCE
Third Buddhist Council
17th regnal year of Ashoka
250 BCE at Pataliputra
Important Facts: Founders & Firsts
Important Facts: Administration & Military
Administrative Facts
Mauryan provinces: 4-5 provinces with Kumara governors
Pataliputra administration: 6 boards of 5 members each (Megasthenes)
Total city committee members: 30 members for Pataliputra
Dhamma Mahamatras appointed: 13th regnal year of Ashoka
Major ports: Bharuch (Arabian Sea), Tamralipti (Bay of Bengal)
Military Facts
Army size (Megasthenes):
- Infantry: 6,00,000
- Cavalry: 30,000
- Elephants: 9,000
- Chariots: 8,000
Seleucus treaty gift: 500 war elephants given by Chandragupta
Important Facts: Economic System
Key Terminology for UPSC
Frequently Asked Prelims Questions: Identification
Frequently Asked Prelims Questions: Specific Events
Comparison Table: The Three Great Mauryans
Debated Historical Issues
Slavery in Mauryan Times
Megasthenes: "No slavery"
Arthashastra: Detailed slave codes
Current understanding: Limited slavery; more like indentured servitude
Ashoka's Conversion Timeline
Before Kalinga: Nominal Buddhist
After Kalinga: Devoted convert
NOT sudden conversion - gradual process
Chandragupta's Origin
Multiple traditions (Brahmanical, Buddhist, Jain, Greek)
Likely of humble origins - all sources agree
Third Council Validity
Buddhist texts: Confirm it occurred
Scholars debate: Date (250 vs. 240 BCE)
Purpose: Purify Sangha, compile texts
Kalinga War Death Toll
Mentioned in Rock Edict XIII
Likely exaggerated for effect
Historical accuracy debated by scholars
Final Summary: The Four Pillars of Mauryan History
The Mauryan Empire was built upon these four interconnected pillars, each contributing significantly to its strength, stability, and lasting legacy in ancient Indian history.
The Ultimate Legacy of Mauryan Empire
5M
Largest empire till then
50 lakh sq. km
137
Duration
322-185 BCE
3
Great Emperors
Chandragupta, Bindusara, Ashoka
Administrative Model
Influenced all later Indian dynasties
Ashoka's Contribution
One of world's greatest rulers; transformed Buddhism into world religion
Governance Principles
Dhamma policy and welfare state concepts still studied
Cultural Heritage
Pillars, stupas, inscriptions remain iconic symbols of ancient India
Legacy of the Mauryan Empire
Political Legacy
Largest empire till then (50 lakh sq. km)
Administrative model influenced later dynasties
Centralized governance principles
Cultural Legacy
Ashoka's edicts shaped Indian ethics
Art and architecture set standards
National emblem from Sarnath pillar
Religious Legacy
Buddhism transformed into world religion
Spread to Sri Lanka, Southeast Asia
Dhamma principles still studied
Historical Significance
One of world's greatest rulers (Ashoka)
Governance principles still revered
137 years of unified rule
Study Tip for Prelims: Focus on numbers, dates, names, and specific edicts. Mauryan Empire is a favorite UPSC topic with 1-2 guaranteed questions each year.