Following the Ottoman Empire's entry in to the First World War as a member of the Central Powers in 1914, the United Kingdom deposed the anti-British Abbas II in favour of his pro-British uncle, Hussein Kamal. The legal fiction of Ottoman sovereignty was terminated, and the Sultanate of Egypt, destroyed by the Ottoman Empire in 1517, was re-established with Hussein Kamal as Sultan. Despite the restoration of the nominal sultanate, British power in Egypt and Sudan was undiminished, as the United Kingdom declared Egypt to be a formal protectorate of the United Kingdom. Whilst Egypt was not annexed to the British Empire, with the British King never becoming sovereign of Egypt, Egypt's status as a protectorate precluded any actual independence for the sultanate. For all intents and purposes, the Sultanate of Egypt was as much controlled by the United Kingdom as the Khedivate of Egypt had been. Rising nationalist anger at British control led to the Egyptian Revolution of 1919, prompting the United Kingdom to recognise Egyptian independence in 1922 as the Kingdom of Egypt. Egyptian nationalists, and Sudanese favouring union with Egypt, demanded that Sudan be included within the bounds of the kingdom, with the term "Kingdom of Egypt and Sudan" entering the nationalist vernacular. However, in the terms of the legal instrument by which the United Kingdom recognised Egyptian independence, it specifically reserved the issue of the governance of Sudan as a question to be resolved in the future. Defying Egyptian and Sudanese demands, the United Kingdom gradually assumed more control of the condominium, edging out Egypt almost completely by 1924.