“What you keep in your mind” :)
The resources that were traded on the Trans-Saharan trade were salt, slaves, and religion. The West African countries were trading their gold for salt. The slaves were sent North and served as slaves or slave concubines. Islam was spread through the use of the Trans-Saharan trade route.
Answer: C is the answer you're looking for :)
The Populist also known as the People's party on July 4, 1892.