This is often voluntarily done. This is slavery without the chains, part of an age-old West African tradition where poor families entrust their children to richer relatives or acquaintances who promise education and a trade in exchange for work. Some do get lucky and return home with money. Some return relatively rich, earning £100 a year, an amount the poorest Malians could not hope to make in five years. Most, however, end up in terrible conditions, the boys on cocoa or cotton plantations, the girls in domestic service: no days off, little food, sleeping in a locked room, beaten if they try to escape. Notably, they receive no money. Some stay, tied to the belief that if they leave, they will never be paid. Others, miles from home, with no possessions, simply have nowhere else to go. This is real slavery.