What was Askia Mohammed's greatest achievement?

Askia Mohammed, the ruler of the Songhai Empire in the late 15th and early 16th centuries, is best known for his efforts to expand and consolidate the empire, making it one of the largest in African history. His greatest achievement was the establishment of a centralized administrative system and a legal framework that promoted trade, education, and Islam throughout the empire, particularly through the famed city of Timbuktu. This not only enhanced the empire's wealth and stability but also made it a center of learning and culture in the Islamic world. Under his leadership, the Songhai Empire reached its peak, influencing West Africa for generations.