The Delhi Sultanate: Slave & Khilji Dynasties (1206–1320 AD)

1. Historical Background & Establishment

Cue Words	Notes
Foundational Eras	The establishment of the Delhi Sultanate in 1206 AD inaugurated 320 years of Muslim political dominance in Northern India, governed successively by five dynasties: Slave / Mamluk Dynasty (1206–1290 AD) Khilji Dynasty (1290–1320 AD) Tughlaq Dynasty (1320–1414 AD) Sayyid Dynasty (1414–1451 AD) Lodi Dynasty (1451–1526 AD)
The Term Mamluk	Derived from the Arabic word Mamluk meaning "owned" or "slave soldier". Applied to the earliest Delhi rulers who were freed military slaves of Ghurid origin. The era comprised three sub-dynasties: Qutbi Dynasty (1206–1211 AD) founded by Qutbuddin Aibak. First Ilbari Dynasty (1211–1266 AD) founded by Shamsuddin Iltutmish. Second Ilbari Dynasty (1266–1290 AD) founded by Ghiyasuddin Balban.

2. The Mamluk / Slave Dynasty (1206–1290 AD)

Cue Words	Notes
Qutbuddin Aibak (1206–1210 AD)	Turkish slave of Muhammad Ghori who served as governor of Ghori's Indian territories. Sovereign Legitimacy: Received a deed of manumission (formal freedom from slave status) and royal insignia (Chatr) from Ghurid Sultan Ghiyasuddin Mahmud, legally severing ties with Ghazni. Made Lahore his capital. Titles & Generosity: Earned epithet Lakh Bakhsh ("Giver of Lakhs") for his lavish patronage and open-handed charity. Did not strike coins in his own name. Architectural Contributions: Built Quwwat-ul-Islam Mosque in Delhi (first mosque in India, built over Qila Rai Pithora) and Adhai Din Ka Jhopra mosque in Ajmer. Initiated construction of the Qutub Minar (dedicated to Sufi saint Khwaja Qutbuddin Bakhtiyar Kaki). Death: Died unexpectedly in 1210 AD at Lahore after falling from his horse while playing Chaugan (horse polo). Succeeded briefly by Aram Shah.
Shamsuddin Iltutmish (1211–1236 AD)	Son-in-law of Aibak and governor of Badaun; regarded as the Real Consolidator of the Delhi Sultanate. Belonged to Ilbari tribe. Capital & Caliphate Investiture: Shifted capital from Lahore to Delhi. In 1229 AD, received formal diploma of investiture (Mansur) and title Yamin-ul-Khilafat ("Right Hand of the Caliphate") from the Abbasid Caliph of Baghdad (Al-Mustansir), granting legal legitimacy to his rule. Subjugation of Rivals: Defeated Tajuddin Yalduz at the 3rd Battle of Tarain (1216 AD) and drowned Nasiruddin Qubacha in the Indus River (1228 AD), securing Sindh and Punjab. Averting Mongol Catastrophe (1221 AD): Displayed high diplomatic astuteness by refusing asylum to Jalaluddin Mangabarni (Shah of Khwarizm), thereby shielding India from the devastating invasion of Mongol conqueror Genghis Khan. Administrative & Currency Reforms: Organized the Iqta System (land revenue assignments to military commanders in lieu of cash salary). Created the Turkan-i-Chahalgani (Corps of 40 Turkish Slave Officers/Nobles). Introduced standard pure Arabic coinage: Silver Tanka (175 grains) and Copper Jital. Monuments: Completed Qutub Minar; built his own tomb (introducing squinch arch) and Sultan Ghari (tomb of his son Nasiruddin Mahmud, first Islamic mausoleum in Delhi).
Razia Sultana (1236–1240 AD)	First and only woman ruler of medieval India. Nominated by Iltutmish as his successor over his incompetent sons. Defiance of Convention: Cast off the veil (Purdah), held open court (Durbar), rode elephants, and dressed in male attire—wearing Qaba (cloak) and Kulah (cap). Opposition from Nobles: Turkish nobility resented her centralized authority and promotion of non-Turks, particularly Jamaluddin Yaqut (Abyssinian slave appointed as Amir-i-Akhur / Superintendent of Royal Stables). Fall & Death: Malik Altunia (Governor of Tabarhinda/Bhatinda) revolted and captured Razia. Razia married Altunia to regain power, but their combined forces were defeated. Both were assassinated by bandits near Kaithal (1240 AD).
Interregnum & Regent Era (1240–1266 AD)	Period of puppet Sultans (Muizuddin Bahram, Alauddin Masud, Nasiruddin Mahmud) controlled by the Chahalgani nobles. Creation of the supreme post of Naib-i-Mamlakat (Regent of the Realm), first held by Ikhtiyaruddin Aitigin. Nasiruddin Mahmud (1246–1266 AD): Pious, frugal ruler who lived a simple life copying Quranic manuscripts. Managed entirely by his Naib (Deputy) Ghiyasuddin Balban, who married his daughter to the Sultan.
Ghiyasuddin Balban (1266–1287 AD)	Powerful noble who restored royal dignity and centralized state authority following decades of factional anarchy. Theory of Kingship: Formulated an autocratic divine kingship theory. Claimed descent from mythical Iranian hero Afrasiyab. Proclaimed Sultan as Niyabat-i-Khudai ("Vicegerent of God on Earth") and Zil-i-Ilahi ("Shadow of God"). Policy of "Blood and Iron" (Lauh aur Rakt): Crushed the lawless Mewati raiders around Delhi; cleared the Doab forests of bandits; mercilessly crushed the rebellion of Bengal governor Tughril Khan at Lakhnauti. Destruction of Chahalgani: Poisoned or exiled prominent members of the Chahalgani to eliminate noble oligarchic interference. Court Etiquette & Military Dept: Introduced strict Persian court rituals: Sijda (prostration before King) and Paibos (kissing royal feet); instituted the annual Persian New Year festival Nauroz. Established a separate military department Diwan-i-Arz headed by Ariz-i-Mamalik to maintain army efficiency. Succeeded briefly by grandson Kaiqubad; dynasty ended when Kaiqubad was overthrown by Jalaluddin Khilji in 1290 AD.

3. The Khilji Dynasty & Expansion (1290–1320 AD)

Cue Words	Notes
The Khilji Revolution (1290 AD)	Jalaluddin Firoz Khilji (1290–1296 AD) overthrew the Mamluks at age 70. This event, termed the Khilji Revolution, broke the long-standing monopoly of Ilbari Turks over political power, opening state offices to non-Turkish Muslims, Afghans, and converted Indian Muslims. Policy of Clemency: Believed in governance by consent and tolerance. Repelled a Mongol raid in 1292 AD; allowed converted Mongols ("New Muslims") to settle near Delhi at Mughalpura. Assassinated at Kara (Kaushambi, UP) in 1296 AD by his ambitious nephew and son-in-law Alauddin Khilji.
Alauddin Khilji (1296–1316 AD)	Most powerful Sultan of the Khilji dynasty. Assumed the title Sikandar-i-Sani ("Second Alexander") and struck it on his coinage.
Northern Conquests of Alauddin	Gujarat (1299 AD): Defeated Baghela ruler Karna Deva. Generals Ulugh Khan & Nusrat Khan captured rich port of Cambay and acquired the military genius slave Malik Kafur (bought for 1,000 dinars, hence nicknamed Hazar Dinari). Ranthambore (1301 AD): Sacked fort of Chauhan king Rana Hamiradeva. Witnessed first recorded Jauhar (mass self-immolation of Rajput women led by Queen Ranga Devi). Chittor / Mewar (1303 AD): Besieged Chittor fort ruled by Guhila king Rana Ratan Singh. Legend of Queen Padmini's Jauhar (later immortalized by Malik Muhammad Jayasi in Padmavat). Renamed Chittor as Khizrabad after his son Khizr Khan. Malwa & Central India (1305 AD): General Ain-ul-Mulk Multani defeated Mahlak Deva, capturing Mandu, Ujjain, Dhar, and Chanderi.
Deccan & Southern Expeditions	Alauddin was the first Sultan of Delhi to cross the Vindhyas and invade Southern India. Expeditions were led by general Malik Kafur: Devagiri (1307–1308 AD): Defeated Yadava king Ramachandra Deva, who submitted, paid tribute, and was honored with title Rai Rayan. Warangal (1309 AD): Defeated Kakatiya king Prataparudra II, who surrendered enormous treasure including the legendary Koh-i-Noor Diamond. Dwarasamudra (1310 AD): Defeated Hoysala king Vira Ballala III. Madurai / Mabar (1311 AD): Intervened in Pandyan succession conflict between Sundara Pandya & Vira Pandya; raided Madurai & Chidambaram, reaching Rameshwaram (where Kafur built a mosque). Strategic Policy: Did not directly annex southern kingdoms; retained native rulers as tributaries paying annual cash tribute and accepting Delhi's suzerainty.

4. Alauddin's Administrative, Military & Market Reforms

Cue Words	Notes
Measures Against Noble Rebellions	Issued 4 strict decrees to prevent rebellions: Confiscated religious endowments, tax-free land grants (Inam, Waqf), and private property. Reorganized intelligence/espionage network; appointed secret spies (Barids and Munhiyas) reporting directly to Sultan. Prohibited sale and consumption of wine, intoxicants, and gambling in Delhi. Banned social gatherings, feasts, and matrimonial alliances among nobles without royal permission.
Military Reforms	Maintained a large, permanent, centralized standing army directly recruited and paid by the state. Cash Payment (Naqad): First Sultan to pay regular cash salaries to soldiers (234 Tankas annually for a trooper/cavalryman). Dagh System: Branding of horses with royal mark to prevent corruption and substitution of inferior steeds. Chehra / Huliya System: Maintaining detailed descriptive rolls of every soldier.
Market Control & Price Fixation	Implemented an unprecedented system of price control in Delhi to maintain a large standing army at low cost without raising soldier pay: Fixed prices for all commodities (food grains, cloth, sugar, oil, horses, cattle, slaves). Established 3 separate markets in Delhi: Mandi (Central grain market) Sarai-i-Adl (Market for manufactured goods, cloth, sugar, herbs) Market for Horses, Cattle, and Slaves. Administration: Supervised by Shahna-i-Mandi (Market Superintendents) and department Diwan-i-Riyasat (headed by Naib Yaqut). Enforced strict rationing, royal granaries (Galla-Bakshi), and harsh physical punishments for short-weighing.
Agrarian & Revenue Reforms	First Sultan of Delhi to order direct measurement of land (Paimash) using standard unit Bishwa. Fixed land revenue (Kharaj) at 50% of gross produce, payable in cash or grain. Imposed additional taxes: Ghari (house tax) and Charai (pasture/grazing tax on milch cattle). Created new department Diwan-i-Mustakharaj to audit and collect revenue arrears from officials. Stripped traditional Hindu village intermediaries (Khuts, Muqaddams, Chaudharis) of their tax exemptions and privileges, reducing them to standard peasant status.

5. End of Khilji Dynasty & Cultural Contributions

Cue Words	Notes
End of Khilji Rule (1316–1320 AD)	Following Alauddin's death in 1316 AD, Malik Kafur placed minor prince Umar on the throne but was assassinated. Qutbuddin Mubarak Shah Khilji (1316–1320 AD) succeeded, abolished Alauddin's market controls, and controversially declared himself Caliph (assuming title Al-Wathiq Billah). He was assassinated by his favorite Khusrau Khan (a converted Hindu noble). Khusrau Khan was defeated in 1320 AD by Ghazi Malik (Ghiyasuddin Tughlaq), founding the Tughlaq Dynasty.
Amir Khusrau (1253–1325 AD)	Illustrious poet-scholar known as Tuti-i-Hind ("Parrot of India"). Disciple of Sufi saint Nizamuddin Auliya. Served under 7 Sultans of Delhi. Musical Inventions: Invented Sitar (blending Veena & Tanpura) and modified Tabla; created Qawwali genre and Khayal style of Hindustani music. Linguistic Innovation: First Muslim poet to freely use Hindavi (early Hindi/Urdu dialect) in verses; coined early Rekhta poetry. Literary Masterpieces: Khazain-ul-Futuh (details Alauddin's conquests), Tughlaq Nama, Niphr-Sipihr ("Nine Skies"), Kiran-us-Sadain, and romantic poem Ashiqa (love story of Deval Rani & Khizr Khan).
Architectural Achievements	Marked the maturation of Indo-Islamic Arcuate style (true arches, domes, red sandstone with white marble inlay): Qutb Minar Complex: Quwwat-ul-Islam Mosque (Aibak/Iltutmish), Qutb Minar (73m tower completed by Iltutmish, repaired by Firoz Tughlaq & Sikandar Lodi), Tomb of Iltutmish (earliest squinch arch). Tomb of Balban: Earliest surviving true arch (voussoir arch) in Indian architecture. Alai Darwaza (1311 AD): Built by Alauddin as southern gateway to Qutb complex; features India's first true dome and true horseshoe arch with lattice screens. Siri Fort & Alai Minar: Built Siri Fort (2nd city of Delhi) to resist Mongol raids; started Alai Minar (unfinished giant minaret planned to be twice the height of Qutb Minar); constructed Hazar Sutun (Palace of 1,000 Pillars) and Hauz Khas reservoir.

6. UPSC High-Yield Recall & PYQ Target Summary

Cue Words	Notes
Real Founder vs Founder	Qutbuddin Aibak founded Slave Dynasty (1206 AD); Iltutmish was the Real Consolidator (shifted capital to Delhi, obtained Caliph's investiture 1229 AD).
Currency & Institutions	Silver Tanka & Copper Jital, Iqta System, and Chahalgani (Corps of 40) were introduced by Iltutmish.
Autocratic Monarchy	Balban formulated Divine Kingship (Zil-i-Ilahi, Niyabat-i-Khudai), introduced Sijda, Paibos, Nauroz, and military dept Diwan-i-Arz.
Market Control & Direct Taxation	Price control, Shahna-i-Mandi, 50% Kharaj tax based on land measurement (Bishwa), Dagh & Chehra military systems, and Diwan-i-Mustakharaj were created by Alauddin Khilji.
Southern General & Kohinoor	Malik Kafur (Hazar Dinari) led Alauddin's southern campaigns, acquiring the Koh-i-Noor diamond from Kakatiya king Prataparudra II.
Architectural Milestones	First True Arch: Tomb of Balban First True Dome & Horseshoe Arch: Alai Darwaza (Alauddin Khilji, 1311 AD) First Mosque in India: Quwwat-ul-Islam (Qutbuddin Aibak)

→ 📜 "Slave Dynasty" — A Contested Label

• Historian's Note: Historian K.A. Nizami argued the term "Slave Dynasty" is a misnomer, since Aibak, Iltutmish, and Balban belonged to three distinct, unrelated families (Qutbi, Ilbari-I, Ilbari-II) rather than one continuous slave lineage — hence textbooks increasingly prefer Mamluk Dynasty or "Early Turkish Rulers."
• Not all rulers were slaves: Razia Sultana and later Slave-dynasty rulers were free-born; only the founding figures (Aibak, Iltutmish) had risen from slave status.