Answer:
Cairo
Step-by-step explanation:
Traveling from his capital of Niani on the upper Niger River to Walata (Oualâta, Mauritania) and on to Tuat (now in Algeria) before making his way to Cairo, Mansa Mūsā was accompanied by an impressive caravan consisting of 60,000 men including a personal retinue of 12,000 enslaved persons, all clad in brocade and Persian silk.