Complex sentence: 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.
Split into simpler sentences: 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. In 1912 the southern half was ceded to Uganda, a British colony.