SAID one of the most striking sultans of medieval INDIA.Muhammad-Bin-Tughlaq succeeded his father, Ghyasuddin Tughlaq, and extended the kingdom beyond India, into Central Asia.He is known for the idea of a Central Capital and experiments with a nominal token Currency.His FIVE Disastrous Projects areTaxation in the Doab.Transfer of Capital.Khurasan Expedition.Karachi Expedition.Introduction of Token Currency.He died in Thatta while BATTLING in Sindh against Taghi, a Turkish slave. Alauddin KhiljiHe was the greatest ruler of the Khilji dynasty (second sultan) and was the first Muslim ruler to extend his empire right up to the extreme South of India.He liked to call himself ‘The Second Alexander’. He took the title ‘Sikander-i-Sani’.He was the first ruler of the Delhi Sultanate who did not ask for Mansur (letter of investiture) from the Caliph but called himself the deputy of the Caliph.Alauddin Khilji is said to have been poisoned by Malik Kafur.Feroz TughlaqHe was the third ruler of the Tughlaq dynasty after the death of Mohammad-bin Tughlaq.He imposed Jizya tax on all non-Muslims and did not even exempt Brahmins and beggers as DONE by his predecessors.He built Feroz Shah Kotla (Kotla means fortress), peppered Delhi with gardens, constructed canals, hunting lodges, and repaired Qutub Minar, Hauz Khas (royal tank), and Surajkund (lake of the Sun).Iltutmish:He is known as “slave of a slave”.He was the slave and the successor of Qutubbuddin Aibak.He launched the silver tanka and the copper Jital as the regular currency.Iltutmish started the system of Iqtadari.Chahalgani or chalisa was formed by Iltutmish.He was the first to make Delhi the capital. "Diwan-i-Bandagan" was Department of Slaves introduced by Firoz Shah Tughlaq."Diwan-i-Mustakhraj" was the Department of arrears introduced by Alauddin Khilji.