What are two reasons why Songhai is often considered "one of the greatest African empires"?

Songhai was the largest empire in African history. Therefore he was powerful.

Explanation:

Songhai was clearly the largest empire in African history. Conquest, centralization, and standardization in the empire were the most ambitious and far-reaching in sub-Saharan history until the colonization of the continent by Europeans.

It had thousands of cultures under its control, it was the largest empire in Africa. They were also good at trading they traded salt, cloth, arms, horses and copper.

early settlements on the subcontinent. both the indus and the ganges rivers carried rich silt from the mountains to the plains. when the rivers flooded, the silt spread over the plains and made the soil in the river valleys fertile for farming.