User talk:2600:1700:77A0:FB90:C957:C346:6379:8AB5

This article states that the Belgians found Sudan in 1896 during an expedition but turned over the country to the British the same year following Leopold's death, yet it is stated in the article that he did not die until 1909. Is that a mistake? What was the reason for the Belgian allowance of British rule over Sudan?