receive proper nutrition or care, and have little or no time to play. More than half of them are exposed to the worst forms of child labor, such as child prostitution, drug trafficking, armed conflicts and other hazardous environments. There exist several international instruments protecting children from child labor, including the Minimum Age Convention, 1973 and the Worst Forms of Child Labour Convention. More girls under 16 work as domestic workers than any other category of child labor, often sent to cities by parents living in rural poverty such as in restaveks in Haiti. Forced adoption Removing children of ethnic minorities from their families to be adopted by those of the dominant ethnic group has been used as a method of forced assimilation. The Stolen Generations in Australia involved Australian Aboriginal and Torres Strait Islander children. In Canada, the Canadian Indian residential school system involved First Nations, Métis and Inuit children, who often suffered severe abuse. As part of the Uyghur genocide, in 2017 alone at least half a million children were also forcefully separated from their families, and placed in pre-school camps with prison-style surveillance systems and 10,000 volt electric fences. In Switzerland, between the 1850s and the mid-20th century, hundreds of thousands of children mostly from poor or single parents were forcefully removed from their parents by the authorities, and sent to work on farms, living with new families. They were known as contract children or Verdingkinder. Most of the children living in institutions around the world have a surviving parent or close relative, and they most commonly entered orphanages because of poverty. It is speculated that, flush with money, for profit orphanages are increasing and push for children to join even though demographic data show that even the poorest extended families usually take in children whose parents have died and it would be cheaper to aid close relatives who want to take in the orphans. Experts and child advocates maintain that separating children from their families often harm children's development. During the One Child Policy in China, women were only allowed to have one child. Local governments would allow the woman to give birth and then they would take the baby away stating the mother violated the one child policy. Child traffickers, often paid by the government, would sell the children to orphanages that would arrange international adoptions worth tens of thousands of dollars, turning a profit