Where does child labor happen?

Child constatly happens mostly in developing country where theres is a lot of traffiking. An example would be in africa where 25% of there country is in child labor  because it is an developing also 14% of the worlds kids are working under 18 years.60% of these kids are working in agriculture and 100million kids are working under 15 years old this is a very young age for them to worn throw hazardus work