The Ottoman Empire had always been successful in reaping the resources of the captured territories, which had rapidly spread further than Edirne and into most of the mainland Greece. To feed the novel military machines and in order to have sufficient soldiers to grasp onto vast territory, which was conquered by the Islamic state, the Ottomans at some point of time required that all the Christian minorities, under the control of Turkish Empire, which need to send the young boys as well as men as honor to their emperors.