While completing the hajj, one of the pillars of Islam, what other pillar or required act did Mansa Musa perform is option A built mosques.
In 1307, Mansa Ms, who was perhaps Sundiata's grandson or grandnephew and the foundation of his dynasty, ascended to the throne. He embarked on his renowned journey to Mecca in the 17th year of his reign (1324).
Mansa Musa performing the hajj, or pilgrimage, to Mecca, allowed him to satisfy one of the Five Pillars of Islam. Musa journeyed in elegance from Mali to the Islamic holy city of Mecca through Egypt.
Hence option a is correct
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