What did mali people invent?

The Mali people, particularly during the height of the Mali Empire in the 13th to 16th centuries, made significant contributions in various fields. They are known for their advancements in architecture, exemplified by the famous mosque of Djinguereber in Timbuktu. Additionally, they Excelled in the fields of mathematics and astronomy, which were critical for navigation and trade. The empire also played a key role in the development of trade networks across West Africa, promoting cultural and intellectual exchanges.