becoming the Ali Gheri clan*** the Drawiish had leaders such as Mohammed Abdullah Hassan, Haji Sudi and Sultan Nur Ahmed Aman, who sought a state in the Nugaal and began one of the longest African conflicts in history.F.O.78/5031, Sayyid Mohamad To The Aidagalla, Enclosed Sadler To Salisbury. 69, 20 August 1899 The news of the incident that sparked the 21 year long Dervish rebellion, according to the consul-general James Hayes Sadler, was spread or as he claimed was concocted by Sultan Nur of the Habr Yunis. The incident in question was that of a group of Somali children that were converted to Christianity and adopted by the French Catholic Mission at Berbera in 1899. Whether Sultan Nur experienced the incident first hand or whether he was told of it is not clear but what is known is that he propagated the incident in June 1899, precipitating the religious rebellion of the Dervishes. The Dervish movement successfully stymied British forces four times and forced them to retreat to the coastal region. As a result of its successes against the British, the Dervish movement received support from the Ottomans and Germans. The Ottoman government also named Hassan Emir of the Somali nation, and the German government promised to officially recognise any territories the Dervishes were to acquire. After a quarter of a century of military successes against the British, the Dervishes were finally defeated by Britain in 1920 in part due to the successful deployment of the newly-formed Royal Air Force by the British government. Majeerteen Sultanate was founded in the early-18th century. It rose to prominence in the following century, under the reign of the resourceful Boqor (King) Osman Mahamuud. His Kingdom controlled Bari Karkaar, Nugaaal, and also central Somalia in the 19th and early 20th centuries. The Majeerteen Sultanate maintained a robust trading network, entered into treaties with foreign powers, and exerted strong centralized authority on the domestic front.Transformation towards a regulated economy, (WSP Transition Programme, Somali Programme: 2000) p.62. The Majeerteen Sultanate was nearly destroyed in the late-1800s by a power struggle between Boqor (King) Osman Mahamuud of the Majeerteen Sultanate and his ambitious cousin, Yusuf Ali Kenadid who founded a separate Kingdom, Sultanate of Hobyo in 1878. Initially Kenadid wanted to seize control of the neighbouring Majeerteen Sultanate, ruled by his cousin Mahamuud. However, he was unsuccessful in this endeavour, and was eventually forced into exile in Yemen.