Delhi Sultanate
Muhammad Ghori left a large realm of India for his slave Qutub-ud din Aibak decide. This marked the beginning of the State of Delhi Sultans, who owe their allegiance to the leaders of Central Asia. Aibak distinguished contribution was his building Qutab Minar in Delhi that resounds in the beauty, grandeur and synthesis of the Indo-Persian architecture. He was followed by his slave Altamash who was responsible for the strengthening of the Turkish nobility, and further consolidation of the Sultanate.
 

Razia Sultana, the daughter of Altamash followed, but because of the opposition of the Orthodox nobility could not continue for long. Balban, originally a slave to Altamash took over the reins of governance. His reign marked the peace and order throughout the Sultanate. His accomplishments have been remarkable, push the Mongols who invaded the northwest of India, and his patronage of Amir Khusrau, the great Persian poet and Urdu.

Balban was followed by Jalal ud din Khilji who managed to repel the attacks Mongolian. Jalal ud din Khilji was followed by Alauddin Khilji, whose reign was famous for remarkable administrative reforms. It moderate Gujarat, Ranthambhor, Chittor, Malwa, and Deccan. His confidence General Malik Kafur continued his master's conquests in the extreme south. The reforms introduced by the market Alauddin Khilji designed to ensure central control on the prices of essential commodities. Its market reforms were originally meant to ensure that a large army could be maintained at a low cost, to quell any unrest in the general population, and ensuring peace and order in the empire.

Alauddin Khilji was followed by Ghiasuddin Tughlaq who built the new town of Tughlakabad near Delhi. It was followed by Muhammad bin Tughlaq, which was a great leader, but at times lacks common sense. His transfer of capital from Delhi to Daulatabad and agricultural reforms in the Doab region proved to be very costly for the empire, with the common man should be put to the suffering unmatched. Because of his lack of tact, he lost his grip on Deccan and Bengal. Firoz Shah Tughlaq who followed Mohammed bin Tughlaq adhered to a policy of appeasement and peace, with the provincial governors in order to strengthen their position. This proved very costly when Timurlang invaded India and Delhi turned into ashes.
 

Timur's Invasion
Timurlang was the leader of Samarkhand, which has been troubled by many problems. To find the successors of Feroz Shah too weak to resist, launched an attack in Delhi. He pillaged and plundered Delhi for 5 days, and later declared a general massacre. Timur left Delhi in famine, disease and lawlessness. Timur gave for the invasion of jolt already tottering Sultanate.

It took nearly a decade for the Sultanate of Delhi to recover from the onslaught of Tamerlane. Khizar Khan, Sayyad was appointed by Timur to rule over the Sultanate. Khizar Khan was soon replaced by Bahlol Lodi that has given peace and order in the Sultanate for nearly 75 years. During the reign of Ibrahim Lodi, the governor of Punjab Daulat Khan Lodi Babur invited to invade India. Babur defeated Ibrahim Lodi, and he ended the rule of the Sultanate in Delhi, and the establishment of the rule of Mughal India.