WEEK 10TOPIC: REASONS FOR THE INVASION OF GHANA EMPIREJealousy, fear, and anger at Ghana's power prompted its neighbours to stand up against the kingdom. Their efforts were at first weak and insignificant, but eventually, in the mid-11th century, a Muslim group known as the Almoravids launched a devastating invasion of the capital city of Koumbi Saleh. Though territories were seized, and a tribute tax was enforced, Ghana recovered and forced the invaders to withdraw.