A lot... The problem is reference-ability. Most of Saharan and Sub-Saharan African history from Antiquity, especially in the BC period, is steeped in obscurity. Literate and urbanized civilizations are also rare in this period. The major literate and urbanized civilizations of the period are the Kushites, the Habesha (D'mt, proto-Aksumites and the Aksumites) and the Garamantes. But I'm sure you know about them by now   Kushites are more or less done (just details now). The Habesha/Early Aksumite
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