 In 1920, the Dervish state collapsed after intensive British aerial bombardments, and Dervish territories were subsequently turned into a protectorate.The dawn of fascism in the early 1920s heralded a change of strategy for Italy, as the north-eastern sultanates were soon to be forced within the boundaries of "La Grande Somalia" according to the plan of Fascist Italy.Prominent Somali royal houses at the time were the Majeerteen Sultanate ruled by King Osman Mahamuud, which controlled much of northeast and central Somalia; the Warsangali Sultanate ruled by Sultan Mahmoud Ali Shire; and the Sultanate of Hobyo ruled by Sultan Yusuf Ali Kenadid.