Ok, but why are you talking about people that live in a village in west africa? The post's original subtext, to me, is pretty clearly about people selling their labor for less than its true value to survive, while the ownership class tremendously profits. Farmers working their own land aren't being exploited (not counting interactions with the outside world that might affect them if they try to sell crops).
Or maybe you tell me more about the value of their labor and how somewhere far far in the distance someone is keeping them poor against their will and best efforts.
I'm not an expert but I imagine colonialism and such might have an impact.