Delhi Sultanate
Delhi Sultanate
The Delhi Sultanate (1206-1526 CE) was a series of five successive Muslim dynasties that ruled from Delhi over large parts of the Indian subcontinent. Established after Muhammad of Ghor's conquests, the Sultanate transformed India's political landscape, introduced new administrative systems, and facilitated Indo-Islamic cultural synthesis.
Key Dates
Qutbuddin Aibak established the Slave (Mamluk) Dynasty after Muhammad of Ghor's death, founding the Delhi Sultanate
Iltutmish succeeded Aibak and consolidated the Sultanate; shifted capital from Lahore to Delhi
Razia Sultana ruled as the first and only female ruler of the Delhi Sultanate
Jalaluddin Khalji founded the Khalji Dynasty, ending the Mamluk (Slave) Dynasty
Alauddin Khalji's reign — market reforms, price control system, Mongol repulsion, conquest of the Deccan
Ghiyasuddin Tughlaq founded the Tughlaq Dynasty after overthrowing the last Khalji ruler
Muhammad bin Tughlaq's reign — transfer of capital to Daulatabad, token currency experiment, failed Khurasan expedition
Firoz Shah Tughlaq's reign — canal irrigation, welfare measures, and establishment of Firoz Shah Kotla
Timur's invasion of Delhi — massive plunder and destruction; accelerated decline of the Tughlaq Dynasty
Sayyid Dynasty ruled as Timur's nominees; four weak rulers with diminished territory
Lodi Dynasty — the last dynasty of the Delhi Sultanate; Bahlol Lodi, Sikandar Lodi, and Ibrahim Lodi
Battle of Panipat — Babur defeated Ibrahim Lodi, ending the Delhi Sultanate and founding the Mughal Empire
Slave (Mamluk) Dynasty (1206-1290)
Founded by Qutbuddin Aibak, a Turkish slave-general of Muhammad of Ghor. Aibak began construction of the Qutub Minar and the Quwwat-ul-Islam mosque in Delhi. Iltutmish (1210-1236) was the real consolidator — he introduced the silver tanka and copper jital, organized the Iqta system, and received investiture from the Abbasid Caliph. Razia Sultana (1236-1240) was the only female ruler; she was competent but faced opposition from the Turkish nobility (the Chalisa/Turkan-i-Chahalgani — the group of forty). Balban (1266-1287) strengthened the sultanate with an iron-fist policy, established the theory of divine right of kings (Niyabat-i-Khudai), destroyed the power of the Forty nobles, and created an efficient spy system (barids).
Khalji Dynasty (1290-1320)
Jalaluddin Khalji (1290-1296) founded the dynasty but was murdered by his ambitious nephew Alauddin Khalji. Alauddin Khalji (1296-1316) was the most powerful Khalji ruler. He introduced revolutionary market control reforms (four separate markets for grain, cloth, horses, and cattle/slaves) enforced by controllers (shahna-i-mandi), secret reporters (munhiyans), and harsh punishments. He successfully repelled multiple Mongol invasions (1299, 1303, 1306). His military commander Malik Kafur led expeditions to the Deccan and South India, bringing back enormous wealth. Alauddin also introduced the system of branding horses (dagh) and maintaining descriptive rolls of soldiers (chehra/huliya) to prevent fraud in the army.
Tughlaq Dynasty (1320-1414)
Ghiyasuddin Tughlaq (1320-1325) founded the dynasty and built Tughlaqabad fort. Muhammad bin Tughlaq (1325-1351) was the most controversial ruler — his five famous projects mostly failed: (1) Transfer of capital from Delhi to Daulatabad (Deogiri) caused immense hardship; (2) Introduction of token currency (bronze/copper coins at par with silver tanka) failed due to widespread counterfeiting; (3) Taxation in the Doab was increased excessively, causing revolts; (4) The Khurasan expedition was abandoned after assembling a large army; (5) The Qarachil expedition to the Himalayas failed. Despite his failures, he was learned and well-read. Ibn Battuta visited his court. Firoz Shah Tughlaq (1351-1388) reversed many harsh policies, built canals (from Yamuna to Hissar), established hospitals (dar-ul-shafa), and founded cities like Jaunpur, Hissar, and Firoz Shah Kotla. However, he reimposed jaziya on non-Muslims.
Sayyid & Lodi Dynasties (1414-1526)
The Sayyid Dynasty (1414-1451) was founded by Khizr Khan, who claimed descent from the Prophet and ruled as Timur's deputy. The four Sayyid rulers controlled little beyond Delhi and its surroundings. The Lodi Dynasty (1451-1526) was the first Afghan dynasty on the Delhi throne. Bahlol Lodi (1451-1489) annexed Jaunpur and extended Lodi control. Sikandar Lodi (1489-1517) founded the city of Agra (1504), was a patron of learning, and introduced the Gaz-i-Sikandari (a unit of measurement). Ibrahim Lodi (1517-1526) was the last Sultanate ruler; his autocratic behavior alienated the Afghan nobles, leading Daulat Khan Lodi (governor of Punjab) and Alam Khan to invite Babur to invade India. Ibrahim Lodi was defeated and killed at the First Battle of Panipat (1526).
Administration & Revenue System
The Sultan was the supreme authority in legislative, executive, and judicial matters. The central administration had key officers: Wazir (Prime Minister/Finance), Ariz-i-Mamalik (Military), Diwan-i-Insha (Royal Correspondence), Diwan-i-Risalat (Religious Affairs/Appeals), Barid-i-Mumalik (Intelligence/Postal). The empire was divided into provinces (iqtas) governed by iqtadars (muqtis) who collected revenue and maintained troops. Under Alauddin Khalji, the Iqta system was tightened with centralized control. The land revenue was typically 1/5 to 1/2 of the produce. Other taxes included kharaj (land tax on non-Muslims), jaziya (poll tax on non-Muslims), khams (1/5 of war booty), and zakat (alms tax on Muslims). Firoz Shah Tughlaq reduced the number of taxes to just four sanctioned by Islamic law.
Economy, Society & Cultural Contributions
The Delhi Sultanate period saw the growth of Indo-Islamic architecture (pointed arches, domes, minarets, calligraphy). Notable structures include Qutub Minar (begun by Aibak, completed by Iltutmish), Alai Darwaza (Alauddin Khalji), Tughlaqabad Fort, and Hauz Khas complex. Amir Khusrau — the 'Parrot of India' — was a great poet who wrote in both Persian and Hindavi; he is credited with developing the sitar, tabla, and qawwali. The Sultanate period saw the emergence of new textiles, paper-making, and the spinning wheel in India. Urdu language began evolving as a camp language (Zaban-i-Urdu) from the interaction of Persian, Arabic, Turkish with local languages. Barani and Isami were notable historians. Provincial kingdoms like Bengal, Jaunpur, Malwa, and Gujarat emerged during the decline of the Sultanate.
Relevant Exams
The Delhi Sultanate is a heavily tested topic across all competitive exams. UPSC Prelims frequently asks about the administrative reforms of Alauddin Khalji, Muhammad bin Tughlaq's experiments, and the Iqta system. SSC and RRB exams test factual recall on dynasty founders, major battles, and architectural monuments. Questions on Amir Khusrau, Razia Sultana, and the market control system are perennial favorites.