The songhai empire was like japan under the tokugawa shogunate because the songhai created a strong central government.
The Songhai Empire was a state which dominated the western Sudan in the 15th and 16th century. At its peak, it was considered as the largest states in African history.
The state had an ethnic group and ruling elite known as the Songhai. Sonni Ali established Gao as capital of the empire although a Songhai state had existed in and around Gao since the 11th century. Some other important cities in the empire were Timbuktu and Djenné, conquered in 1468 and 1475 respectively.
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