How did mansa musa elevate the standing of the mali empire in the world?

a. his lavish pilgrimage to mecca made the empire of mali and its wealth widely known.
b. his war with the hausa convinced many that he was a powerful ruler who should be feared.
c. his conquest of ghana brought the gold trade in north africa to a new golden age.
d. his conversion to christianity convinced many in europe that africa was an important place.

Correct answer choice is:

Mansa Musa was the tenth Mansa, which transposes to "sultan", "conquistador", or "monarch", of the prosperous West African Mali Empire. He became ruler in 1307. He was the leading African leader to be broadly recognized in Europe and the Middle East. Mansa Musa was the famous nephew of Sundiata Keita, who was the patron of the realm. Throughout his rulership Mali may have been the greatest generator of gold in the world; it was at a time of extraordinary market for the goods. His extensive pilgrimage to the Muslim holy city of Mecca in 1324 introduced him to leaders in the Middle East and in Europe.