Q: In this task, you're given a question, along with a context passage which has extra information available on certain terms mentioned in it. Your job is to determine which sentence(s) from the passage can be used to search for further information needed to answer the question.
Question: Who was held responsible for Charles George Gordon's death? Passage:In 1889 de Mores joined La Ligue antisemitique de France (Antisemitic League of France) founded by Edouard Drumont. After more verbal attacks on Jews, he went to Algeria to strengthen the French hold there and stop British advances into the interior of Africa. He used anti-Semitic rhetoric to his advantage in Algeria, giving speeches claiming that French and African Jews and the British were conspiring to conquer the entire Sahara Desert. With the British in a difficult position in the Sudan after the death of General Charles George Gordon in the siege of Khartoum, de Mores planned a trip there to meet with the Mahdi, a powerful Muslim leader who was intent on undermining British hegemony in the region. He traveled to North Africa, selected Arabic men in Tunis to escort him, and set out his caravan towards Kebili.

A:
With the British in a difficult position in the Sudan after the death of General Charles George Gordon in the siege of Khartoum, de Mores planned a trip there to meet with the Mahdi, a powerful Muslim leader who was intent on undermining British hegemony in the region