The Songhai Empire in Mali declined because of weak leaders and civil wars in 1590 during the reign of Askia Muhammad.
The Songhai Empire was established around the Ni g er River.
Trade became the source of the economy.
The presence of gold helped it gain influence in Africa and flourish in trans-Saharan trade and with Europeans.
The empire declined because of its weak leaders with their weak administration, which led to civil wars to gain control of the empire.
Thus option D is the correct answer.
Learn more about the Songhai Empire here:
brainly.com/question/1673927
