I am pretty sure that many villages in the Sahel have been settled at the edge of the Sahara. I choose the option C because It seems to me that you are referring era of Sahelian Kingdoms and If so, most odf them were settled <span>at the edge of the Sahara. Do hope you will find it helpful!
Regards.</span>
Answer:
Juan Ponce de leon, Alvar Nunez Cabeza de Vaca, Fransisco Pizarro, Hernan Cortes and Hernando de Soto i think
Explanation:
<span>In geology, a placer deposit or placer is an accumulation of valuable minerals formed by gravity separation during sedimentary processes.</span>