In 1914, Khedive Abbas II sided with the Ottoman Empire which had joined the Central Powers in the World War I, and was promptly deposed by the British in favor of his uncle Hussein Kamel. The legal fiction of Ottoman sovereignty over Egypt and Sudan, which had for all intents and purposes ended in 1805, was officially terminated, Hussein Kamel was declared Sultan of Egypt and Sudan, and the country became a British Protectorate. With nationalist sentiment rising, as evidenced by the revolution of 1919, Britain formally recognized Egyptian independence in 1922, and Hussein Kamel's successor, Sultan Fuad I, substituted the title of King for Sultan. However, British occupation and interference in Egyptian and Sudanese affairs persisted. Of particular concern to Egypt was Britain's continual efforts to divest Egypt of all control in Sudan. To both the King and the nationalist movement, this was intolerable, and the Egyptian Government made a point of stressing that Fuad and his son King Farouk I were "King of Egypt and Sudan".