Explanation: The Delhi Sultanate was a significant period in Indian history, marked by the rule of several Muslim dynasties. The Slave dynasty, Khalji dynasty, Tughluq dynasty, Sayyid dynasty, and Lodi dynasty successively ruled over large parts of the Indian subcontinent. Each dynasty had its own distinct characteristics, rulers, and contributions to the political and cultural landscape of medieval India.
The Slave dynasty, also known as the Mamluk dynasty, was the first to rule the Delhi Sultanate from 1206 to 1290. It was established by Qutb-ud-din Aibak, a former slave who rose to power and founded the dynasty. The Slave dynasty is notable for its establishment of the Delhi Sultanate and the construction of the Qutb Minar, a significant architectural landmark.
The Khalji dynasty, which ruled from 1290 to 1320, was known for its military conquests and the reign of Alauddin Khalji. Alauddin Khalji expanded the Sultanate's territory significantly and implemented various administrative reforms. However, the Khalji dynasty's rule was relatively short compared to the Tughluq dynasty.
The Tughluq dynasty, which ruled from 1320 to 1414, was the longest-lasting among the given options. It was established by Ghiyasuddin Tughluq and was marked by the ambitious and controversial reign of Muhammad bin Tughluq. Muhammad bin Tughluq attempted significant administrative and military reforms, including the transfer of the capital from Delhi to Daulatabad, which had mixed results. Despite internal strife and challenges, the Tughluq dynasty's rule lasted for nearly a century, making it the longest among the given options.
The Lodi dynasty, which ruled from 1451 to 1526, was the last to rule the Delhi Sultanate before the Mughal Empire. It was established by Bahlul Lodi and is known for its stability and the reign of his successors. The Lodi dynasty's rule was marked by relative peace and prosperity, but it was shorter in duration compared to the Tughluq dynasty.
In conclusion, the Tughluq dynasty ruled for the most number of years among the given options, lasting from 1320 to 1414, a period of about 94 years. This makes it the longest-lasting dynasty among the Slave, Khalji, and Lodi dynasties.