None.
they dont have to it just happens that way. no legal reason.
Usually in the United States, children tend to stay with their parents until they reach the age of 18. This is due to college. In other countries, such as Italy in Europe, children usually stay with their parents until they are married.
There is no legal age exactly, as long as at that age they can take care of themselves for the night and aren't in danger. It's all up to the parents besides that.
There is no specific 'legal' age as, similarly to leaving children home alone, it is up to the parents to decide if the child is mature enough to be left unsupervised. However, it is illegal to leave children unsupervised if doing so is likely to put them in harms way so I guess this would mean young children who cannot adequately care for themselves. The legal issue aside, bear in mind that most hotels will not allow children under 16 to stay as unaccompanied guests anyway.
sometimes
10
You have rights and do not leave your home until you see a lawyer and know your rights. If you have little to no money some lawyers will give a half hour to an hour legal advice or you can go to Legal Aid. Your husband does not have as many rights as he thinks he does and if there are minor children involved he may well have to pay child support. For now, try to stay out of his way and do not tell him you are seeing a lawyer.
There is a superstition that the longer children stay up on New Year's Eve, the longer their parents will live.
Host parents, regular parents, a place to stay, looked after.
14
16.
some children have to stay at home and help family and parents