Task: Text Categorization
Input (English): One ruler of this empire turned the city of Djenne in to a center of learning. It emerged from small settlements under the Za dynasty, who were based in Kukiya. Sonni Barus lack of strong Muslim belief led many to fear that he would cut off trade, which a rebellion which overthrew him. The empire came to an end in 1591 at the hands of invading Moroccans. For 10 points, name this pre-colonial African empire once ruled by Sonni Ali and Askia the Great, centered at Gao on the banks of the Niger River.
Output (English): History