Concept:The political capital of the Kanem-Borno Empire changed in the early 19th century after the fall of Ngazargamu.Explanation:Ngazargamu served as the capital of Borno from around the 15th century. However, it was destroyed during the Fulani jihad in the early 19th century. Muhammad al-Amin al-Kanemi then established Kukawa as the new capital. Therefore, during most of the 19th century, the empire was administered from Kukawa.Answer:A. Kukawa