On 10 June 1910, following Léopold's death, the district became a province of the Anglo-Egyptian Sudan as part of Bahr al-Ghazal province and in 1912 the southern half was ceded to Uganda, a British colony.
The district became a province of the Anglo-Egyptian Sudan as part of Bahr al-Ghazal province. This was on 10 June 1910. This was following Léopold's death. June 1910 the southern half was ceded to Uganda. This was in 1912. This was on 10. Uganda was a British colony.