Multiple choice general knowledge Capital of Sudan? Mbabane Khartoum Nuku'alofa Kampala Reveal answer Fill a bubble to check yourself B Correct answer Explanation Khartoum is the capital of Sudan, located at the confluence of the White and Blue Nile rivers. Mbabane is the capital of Eswatini, Nuku'alofa is the capital of Tonga, and Kampala is the capital of Uganda.