Mubarak Al-Sabah influence by opening up customs and harbormaster posts. Through these posts the Ottomans tried to forcefully compel Mubarak to accept the new Ottoman presence, therefore showing real loyalty to the Ottomans. However, the British publicly reinforced Kuwait as they began solidifying the meaning of the 1899 Agreement. This showdown caused a crisis between the Ottomans and the British over Kuwait's status as a state. After the Perseus Zuhaf encounter, where an Ottoman and British warship had a stand-off with each other, Mubarak, the British, and the Ottomans agreed to sign the Status Quo Agreement in September 1901. This agreement maintained
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