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
Culture of the Ottoman Empire under the Ottomans, its traditions having been shaped by the work of Abbasid calligrapher Yaqut al-Musta'simi of Baghdad, whose influence had spread across the Islamic world, al-Musta'simi himself possibly being of Anatolian origin. The Diwani script is a cursive and distinctively Ottoman style of Arabic calligraphy developed in the 16th and early 17th centuries. It was invented by Housam Roumi, reaching its greatest development under Süleyman I the Magnificent (1520–66). The highly decorative script was distinguished by its complexity of line and by the close juxtaposition of the letters within words. Other forms included the flowing, rounded Nashki script, invented