"An invasion from Morocco" is the one event among the choices given in the question that <span>marks the final stage in the collapse of the Songhai empire. The correct option among all the options that are given in the question is the last option or the fourth option. I hope the answer has come to your help.</span>
I believe the answer is: "An invasion from Morocco"
The invasion from Morocco happened in the 16th century. Even though the Songhai Empire's solders outnumber Morocco's soldiers, Morocco able to came up victorious by utilising smart military strategies. This battle was later known as the battle of Tondibi.
