Mamluk dynasty (Delhi) in the context of "Sultan of Delhi"

The Delhi Sultanate or the Sultanate of Delhi was a late medieval empire primarily based in Delhi that stretched over large parts of the Indian subcontinent for more than three centuries. The sultanate was established in 1206 in the former Ghurid territories in India. The sultanate's history is generally divided into five periods: Mamluk (1206–1290), Khalji (1290–1320), Tughlaq (1320–1414), Sayyid (1414–1451), and Lodi (1451–1526). It covered large swaths of territory in modern-day India, Pakistan, Bangladesh, as well as some parts of southern Nepal.

The foundation of the Sultanate was established by the Ghurid conqueror Muhammad Ghori, who routed the Rajput Confederacy, led by Ajmer ruler Prithviraj Chauhan, in 1192 near Tarain in a reversal of an earlier battle. As a successor to the Ghurid dynasty, the Delhi Sultanate was originally one of several principalities ruled by the Turkic slave-generals of Muhammad Ghori, including Taj al-Din Yildiz, Qutb ud-Din Aibak, Bahauddin Tughril and Nasir ad-Din Qabacha, that had inherited and divided the Ghurid territories amongst themselves. Khalji and Tughlaq rule ushered a new wave of rapid and continual Muslim conquests deep into South India. The sultanate finally reached the peak of its geographical reach during the Tughlaq dynasty, occupying most of the Indian subcontinent under Muhammad bin Tughluq. A major political transformation occurred across North India, triggered by the Central Asian king Timur's devastating raid on Delhi in 1398, followed soon afterwards by the re-emergence of rival Hindu powers such as Vijayanagara Empire and Kingdom of Mewar asserting independence, and new Muslim sultanates such as the Bengal and Bahmani Sultanates breaking off. In 1526, Timurid ruler Babur invaded northern India and conquered the Sultanate, leading to its succession by the Mughal Empire.

The Muslim conquests on the Indian subcontinent mainly took place between the 13th and the 18th centuries, establishing the Indo-Muslim period. Earlier Muslim conquests on the Indian subcontinent include the invasions which started in the northwestern Indian subcontinent (modern-day Pakistan), especially the Umayyad campaigns in India. Later during the 8th century, Mahmud of Ghazni, sultan of the Ghaznavid Empire, invaded vast parts of Punjab and Gujarat during the 11th century. After the capture of Lahore and the end of the Ghaznavids, the Ghurid ruler Muhammad of Ghor laid the foundation of Muslim rule in India in 1192. In 1202, Muhammad Bakhtiyar Khalji led the Muslim conquest of Bengal, marking the easternmost expansion of Islam at the time.

The Ghurid Empire soon evolved into the Delhi Sultanate in 1206, ruled by Qutb ud-Din Aibak, the founder of the Mamluk dynasty. With the Delhi Sultanate established, Islam was spread across most parts of the Indian subcontinent. In the 14th century, the Khalji dynasty under Alauddin Khalji, extended Muslim rule southwards to Gujarat, Rajasthan, and the Deccan. The successor Tughlaq dynasty temporarily expanded its territorial reach to Tamil Nadu. The disintegration of the Delhi Sultanate, capped by Timur's invasion in 1398, caused several Muslim sultanates and dynasties to emerge across the Indian subcontinent, such as the Gujarat Sultanate, Malwa Sultanate, Bahmani Sultanate, Jaunpur Sultanate, Madurai Sultanate, and the Bengal Sultanate. Some of these, however, were followed by Hindu reconquests and resistance from the native powers and states, such as the Telugu Nayakas, Vijayanagara, and Rajput states under the Kingdom of Mewar.

Alauddin Khalji (Persian: علاء الدین خلجی; born Ali Gurshasp; c. 1266 – 4 January 1316), was the Sultan of Delhi from 1296 until his death in 1316. Alauddin instituted a number of significant administrative changes in the Delhi Sultanate, related to revenues, price controls, and society. He also successfully fended off several Mongol invasions of India.

Alauddin was a nephew and a son-in-law of his predecessor Jalaluddin. When Jalaluddin became the Sultan of Delhi after deposing the Mamluks, Alauddin was given the position of Amir-i-Tuzuk (equivalent to master of ceremonies). After suppressing a revolt against Jalaluddin, Alauddin obtained the governorship of Kara in 1291, and the governorship of Awadh in 1296, after a profitable raid on Bhilsa. In 1296, Alauddin raided Devagiri, and used the acquired loot to stage a successful revolt against Jalaluddin. After killing Jalaluddin, he consolidated his power in Delhi, and subjugated Jalaluddin's sons in Multan.

Subahdar was one of the designations of a governor of a Subah (province) during the Khalji dynasty of Bengal, Mamluk dynasty, Khalji dynasty, Tughlaq dynasty, and the Mughal era who was alternately designated as Sahib-i-Subah or Nazim. The word, Subahdar is of Persian origin. The Subahdar was the head of the Mughal provincial administration. He was assisted by the provincial Diwan, Bakhshi, Faujdar, Kotwal, Qazi, Sadr, Waqa-i-Navis, Qanungo and Patwari. The Subahdars were normally appointed from among the Mughal princes or the officers holding the highest mansabs (ranks).

Jalal-ud-Din Khalji, also known as Firuz al-Din Khalji, Jalaluddin Khilji or Firuz II (Persian: جلال الدین خلجی; c. 1220 – 19 July 1296) was the Sultan of Delhi from 1290 until his death in 1296. He was the founder and first Sultan of the Khalji dynasty that ruled the Delhi Sultanate of India from 1290 to 1320.

Originally named Firuz, Jalal-ud-Din started his career as an officer of the Mamluk dynasty, and rose to an important position under Sultan Muizzuddin Qaiqabad. After Qaiqabad was paralyzed, a group of nobles appointed his infant son Shamsuddin Kayumars as the new Sultan, and subsequently tried to kill Jalal-ud-Din. Instead, Jalal-ud-Din had the group of nobles killed and became regent. A few months later, he deposed Kayumars, and became the new Sultan.