محمد الفاتح
Mehmed the Conqueror consolidated power by building his imperial court, the divan, with officials who would be solely loyal to him and allow him greater autonomy and authority. Under previous sultans the divan had been filled with members of aristocratic families that sometimes had other interests and loyalties than that of the sultan. Mehmed the Conqueror transitioned the empire away from the Ghazi mentality that emphasizes ancient traditions and ceremonies in governance and moved the empire towards a centralized bureaucracy largely made of officials of devşirme background. Additionally, Mehmed the Conqueror took the step of converting the religious scholars who were part of the Ottoman madrasas into salaried employees of the Ottoman bureaucracy who were loyal to him. This centralization was possible and formalized through a kanunname, issued during 1477–1481, which for the first time listed the chief officials in the Ottoman government, their roles and responsibilities, salaries, protocol and punishments, as well as how they related to each other and the sultan.