Mubarak Al-Sabah included other pressures and troubles for the Ottoman Empire including the British lobbying on Kuwait's behalf, led to the Anglo-Ottoman Convention of 1913, which recognized Kuwait as an autonomous "kaza" of the Ottoman Empire within the Green zone outlined in the map as well as an independent entity within the red zone outlined in the map. By the time World War I began Mubarak closely sided with the British against the Ottomans, and the 1913 Convention was rendered null. In support of the war effort Mubarak sent a force to Umm Qasr, Safwan, Bubiyan, and Basra to expel the Ottomans
Rise of the Ottoman Empire tax burden was increased, prompting criticism from writers who saw such centralization in a negative light. Of particular importance for Ottoman success was their ability to keep the empire intact from generation to generation. While other Turkic groups frequently divided their realms between the sons of a deceased ruler, the Ottomans consistently kept the empire united under a single heir. The process of centralization is closely connected with an influx of Muslim scholars from Central Anatolia, where a more urban and bureaucratic Turkish civilization had developed under the Seljuks of Rum. Particularly influential was the Çandarlı family, which supplied several