What factors led to the fall of the empire of Ghana?

Climate change and foreign invasions

Lack of weapons and livestock

Lack of unity, and destruction of Koumbi Saleh

Destruction of Koumbi Salech, and climate change

The correct answer would be "The Destruction of Koumbi Salech and climate change". The capital city of Koumbi Salech was weakened by the constant invasions from their neighbors, prompted by their jealously and fear of Ghana's wealth and power. After the invasion that left them vulnerable, a severe drought came and forced people to move out of the empire to seek food and water.