Answer:
By Turning his kingdom into an advanced learning center of In the Islamic world.
Step-by-step explanation:
During his reign, Mensa Musa developed cities like Timbuktu and Gao and turned them into both learning and cultural center that opened to all scholars all over the world. Sankore Madrasah was probably one of the most wide-known learning center between them all.
Creating this learning centers encouraged many students from Asia, Europe, Africa, and middle east to come in and study there. This encouraged cultural interaction between different nations.