Delhi Sultanate

Which ruler of Slave Dynasty recognized the military department known as Diwan-i-Ariz for defence against Mongols, introduced ‘Pabos’ - touching the kings feet and ‘Sijda’ - bowing to the king in his court?

-- Ghiyas-ud-din Balban

During whose ruler in Delhi Sultanate, the post of naib (Naib-i-Mamlikata) was created and Nobles had chosen one among themselves as naib who, in fact, enjoyed all powers of the state. However, this post had purpose and meaning only during the reigns of weak rulers?

-- Sultan Bahram Shah

Which Sultan consfiscated all land given as gifts or as charity by previous rulers and ....