Can someone help me with these?

How was Islam introduced to West Africa?

What was the significance of Mansa Musa's pilgrimage?

Islam gained momentum during the 10th century in West Africa with the start of the Almoravid dynasty movement on the Senegal River and as rulers and kings embraced Islam. Islam then spread slowly in much of the continent through trade and preaching.

Pilgrimage to Mecca. Mansa Mūsā, either the grandson or the grandnephew of Sundiata, the founder of his dynasty, came to the throne in 1307. In the 17th year of his reign (1324), he set out on his famous pilgrimage to Mecca. It was this pilgrimage that awakened the world to the stupendous wealth of Mali.