Najd Sanjak an autonomous separate country within the empire. The sultan recognized Abdullah II Al-Sabah as the kaymakam of Kuwait as a subprovince of al-Ahsa, formally acknowledging that Kuwait was a part of the Ottoman Empire and that it was ruled by the Sabah family. In 1913 Ibn Saud launched an attack on Hofuf, where 1,200 Turkish troops had been stationed since the province's annexation in 1870. The Ottoman garrison was expelled from Hasa, and the territory fell to the Al Saud. Even after the conquest of Hasa, Britain considered Ibn Saud to be an Ottoman vassal, and the Anglo-Ottoman Convention of
Historiography of the fall of the Ottoman Empire the first writers in the 1960s to summarise the works on Ottoman socio-economic history. He suggested one of the reasons for Ottoman economic decline was the inability of the ruling class to make a clear choice between war and the more conventional types of capital formation. Berkes' work however focused on the confrontation of the Ottomans and the Europeans, and though important, had little detail on the commercial activities of the state. The Ottomans saw military expansion and fiscalism as the primary source of wealth, with agriculture seen as more important than manufacture and commerce. Berkes described the Ottoman economy