The Delhi Sultanate (1206–1526)

The Delhi Sultanate refers to the Muslim sultanates that ruled over the Indian subcontinent from Delhi between 1206 and 1526. It was established after Muhammad of Ghor's victory at the Second Battle of Tarain (1192) over Prithviraj Chauhan. The Sultanate was ruled successively by five dynasties: the Slave (Mamluk), the Khilji, the Tughluq, the Sayyid, and the Lodi.

1. The Slave (Mamluk/Ghulam) Dynasty (1206–1290)

The Slave dynasty was the first Muslim ruling dynasty of India. The rulers of this dynasty were either slaves themselves or sons and descendants of slaves. "Mamluk" in Arabic means "owned" and refers specifically to a slave of royal blood.

Qutb-ud-din Aibak (1206–1210)

• Founder of the Delhi Sultanate; a Turkish slave who was the favorite general of Muhammad of Ghor.
• He is called "Lakh Baksh" (Giver of Lakhs) for his extreme generosity.
• Architectural Works: Initiated the construction of the Qutb Minar (completed by Iltutmish) and the Quwwat-ul-Islam mosque (the first mosque in Delhi), and the Adhai-din-ka-Jhopra mosque in Ajmer.
• He died in 1210 in a fall from a horse while playing polo (chaugan).

Shams-ud-din Iltutmish (1211–1236)

• Considered the real consolidator and organizer of the Delhi Sultanate. He was Aibak's son-in-law.
• Key Achievements:
  • Organized the "Turkan-i-Chahalgani" (the Group of Forty) — a council of forty powerful Turkish nobles.
  • Received a patent of investiture (Mansur) from the Abbasid Caliph of Baghdad in 1229, which legitimized his rule as a Muslim sovereign.
  • Introduced the "Iqta System" — the assignment of revenue rights over a territory (Iqta) to nobles (Muktis/Walis) in exchange for administrative and military duties.
  • Introduced pure Arabic coinage (the silver Tanka and the copper Jital), which became the standard currency of the Sultanate.
  • Completed the Qutb Minar and built the Iltutmish Tomb in Delhi.
  • Repelled the Mongol invasion under Genghis Khan by cleverly refusing to give shelter to the fugitive Jalal-ud-Din Mangbani, prompting the Mongols to retreat.
• Nominated his daughter Razia as successor, the first woman to sit on the throne of Delhi.

Sultan Razia (1236–1240)

• The first and only female ruler of the Delhi Sultanate.
• She discarded her veil, rode elephants, and held open court — progressive acts that antagonized Turkish nobles.
• Known for her capable and intelligent administration. She promoted Jamal-ud-Din Yaqut (an Abyssinian slave) to a high position, which particularly incensed the Turkish nobles.
• She was deposed and killed by a conspiracy of the Turkish nobles (the Forty) in 1240.

Ghiyas-ud-Din Balban (1266–1286)

• The most powerful and effective ruler of the Slave dynasty; often considered its actual consolidator after Iltutmish.
• Theory of Kingship: Balban believed in divine origin of kingship. He said: "The heart of the king is the mirror of God (Dil-e-padshah, aina-e-khuda hai)". He adopted the Persian court ceremonials — Sijda (prostration) and Paibos (kissing the feet of the king) — to elevate the monarchs prestige.
• Destroyed the power of the Chahalgani (the Forty) systematically, eliminating or demoting them to restore royal authority.
• Established an efficient spy network (Barid system) to keep the king informed about everything.
• Reorganized the army and separated the military department (Diwan-i-Ariz) from the Finance Ministry.
• Adopted a policy of "Blood and Iron" against rebellions — ruthlessly crushing all revolts.
• He was the first to introduce the Persian concept of Nauroz festival at the Delhi court.

2. The Khilji Dynasty (1290–1320)

The Khilji dynasty marked a departure from the purely Turkish monopoly over sultanate power — though Afghan in origin, they represented a more cosmopolitan approach, promoting Indian Muslims to high positions.

Jalal-ud-Din Firuz Khilji (1290–1296)

• Founder of the Khilji dynasty; was at least 70 years old when he ascended the throne.
• Adopted a conciliatory and tolerant policy, preferring negotiation over violence.
• His nephew Malik Chhajju's revolt was supressed.
• Suppressed the Thuggee (Thagi) movement — a organized cult of highway robbers who worshiped Goddess Kali.

Ala-ud-Din Khilji (1296–1316)

• The most powerful ruler of the Khilji dynasty; came to power by treacherously murdering his father-in-law, Jalal-ud-Din.
• Military Conquests:
  • He was the first Sultan to conquer South India (Deccan). Sent his general Malik Kafur on a series of brilliant campaigns.
  • Conquered: Devagiri (Yadavas), Warangal (Kakatiyas), Dvarasamudra (Hoysalas), and Madurai (Pandyas).
  • Successfully repelled multiple Mongol invasions (Saldi, Qutlugh Khwaja, Targhi, Iqbalmand).
• Administrative Reforms (The key UPSC focus):
  1. Market Reforms (Sahasram): He established four separate markets in Delhi: (1) grain market Mandi, (2) cloth, cattle, and horses market, (3) live-stock and cattle market, and (4) market of miscellaneous goods. Each market was controlled by a Shahna (market controller), and prices were fixed. This was an extraordinary economic experiment.
  2. Revenue Reform: He increased land revenue assessment to 50% of the produce (up from the traditional 1/5 or 1/4). He measured all agricultural land.
  3. Separation of Religion from State: He clearly announced that political decisions would be based on expediency and not religious law (Shariat), consulting Ulema only for religious matters.
  4. Spy System: He developed an elaborate espionage network.
• Construction: Alai Darwaza (gateway to the Quwwat-ul-Islam Mosque), began constructing Alai Minar (planned to be twice the height of Qutb Minar, never completed), and his palace complex at Siri.
• Cultural Patronage: Patronized poets like Amir Khusrau and Amir Hasan.

Malik Kafur

• Ala-ud-Din's brilliant and ruthless military general who was a Hindu convert (originally from Gujarat called "Hazara Dinari" as he was bought for 1000 dinars).
• Led successful military campaigns to South India between 1308-1311, bringing back immense wealth.
• After Ala-ud-Din's death in 1316, he became the de facto ruler for 35 days before being killed.

Mubarak Shah Khilji (1316–1320)

• Last effective Khilji ruler; was murdered by his favorite, Khusrau Khan, ending the Khilji dynasty.