Answer:
Shaykh Mansa Musa (RA) held great influence to Islam in Mali, because during his reign he had made conquests west of Mali, capturing all of the Ghana Empire's land, and reaching the Western coast of Africa. Mamluk Imams and leaders visited him and consulted him, he also imposed Shari'a (Islamic law) on his lands, and supported it's culture and encouraged scholarship in Islam. He also donated massive amounts of wealth to the Mamluk sultanate.
Step-by-step explanation:
BTW, you don't have to include the RA or the Shaykh, they're just Islamic honorifics.