Anglo-Ottoman Convention of 1913 Empire within the drawn green-zone and pledged to not establish a protectorate, while the Ottoman Empire recognized the validity of agreements that had made Kuwait a British protectorate except by name and recognized Kuwait as an independent entity within the drawn red-zone. According to the agreement, Kuwait constituted “an autonomous kaza of the Ottoman Empire,” thereby recognizing Sheikh Mubarak al-Sabah as ruler of Kuwait as well as "kaymakam" (Ottoman district governor) (Article 1). Kuwait was listed as such because the Ottomans and British interpretations of “sovereignty” and “suzerainty” differed in their counter-drafts and so both terms were omitted in the
Rise of the Ottoman Empire judge ("Kazasker") was created, indicating an increasing level of social stratification between the emerging military-administrative class ("askeri") and the rest of society. Murad I also instituted the practice of appointing particular frontier warriors as "Lords of the Frontier" ("uc begleri"). Such power of appointment indicated that the Ottoman rulers were no longer merely "primus inter pares" but sat at the top of a hierarchy of leadership. As a way of openly declaring this new status, Murad became the first Ottoman ruler to adopt the title of sultan. Beginning at the latest by the 1430s, but most likely earlier, the Ottomans