Turkey also formally accepted the loss of Cyprus (which had been leased to the British Empire following the Congress of Berlin in 1878, but de jure remained an Ottoman territory until World War I). Egypt and Anglo-Egyptian Sudan (both of which had been occupied by British forces with the pretext of "putting down the Urabi Revolt and restoring order" in 1882, but de jure remained Ottoman territories until World War I) were given to the British Empire, which had unilaterally annexed them on 5 November 1914.[3] The fate of the province of Mosul was left to be determined through the League of Nations.