How did mansa musa affect the mali empire?

  Mansa Musa was knowledgeable in Arabic and was described as a Muslim traditionalist.  He became the first Muslim ruler in West Africa to make the nearly four thousand mile journey to Mecca.  Preparing for the expedition took years and involved the work of artisans in numerous towns and cities across Mali.  
Upon his return from Mecca, Mansa Musa brought Arab scholars, government bureaucrats, and architects.  Among those who returned with him was the architect Ishaq El Teudjin who introduced advanced building techniques to Mali.  He designed numerous buildings for the Emperor including a new palace named Madagou, the mosque at Gao, the second largest city in Mali, and the still-standing great mosque at Timbuktu, the largest city in the empire. That mosque was named the Djinguereber. El Teudjin’s most famous design was the Emperor’s chamber at the Malian capital of Niani.

This answer would be c