The most accurate response regarding the effect a university in Timbuktu had on the Songhai Empire is:
Many scholars and students came to learn at the university.
Timbuktu, known for its prestigious center of learning, attracted scholars from various regions, contributing to the intellectual and cultural flourishing of the Songhai Empire. This made Timbuktu a key hub for education and knowledge, enhancing the empire's reputation and influence in the Islamic world.