Explanation: The vast annexation of territories was followed by extensive administrative reforms aimed at stabilising the government.

• Ala-ud-din’s first measure was to deprive the nobles of the wealth they had accumulated. It had provided them the leisure and means to hatch conspiracies against the Sultan.
• Marriage alliances between families of noble men were permitted only with the consent of the Sultan.
• The Sultan ordered that villages held by proprietary rights, as free gifts, or as a religious endowment be brought back under the royal authority and control.
• He curbed the powers of the traditional village officers by depriving them of their traditional privileges. Corrupt royal officials were dealt with sternly.
• The Sultan prohibited liquor and banned the use of intoxicating drugs.

Source: NCERT