… and put local African cloth producers out of business. The same happened with shoes sent to African countries by NGOs. Well intentioned, but local shoe manufacturers went out of business. The local population did not really benefit, because traders would get a hold of the free shoes and sell them on for just a bit less than locally produced shoes.

Describing it as a market is not entirely correct. The clothes these people wear are garbage. As a species, we produce more clothes than we could ever wear. I am reminded of a story of a charity that accepted clothing donations for the victims of an American hurricane, and immediately had to stop because their warehouse filled up. Many clothes are not even worn once before they're thrown away, and one of the cheaper ways to dispose of them is dumping them on 3rd worlders. It's quite dystopic really the underclasses who dig through our trash.