Under British Law, a child may leave home at the age of 16 if they have their parent or guardian's permission, however children do not have any legal right to decide who to live with.
That being said, the family court will take the child's wishes into account during custody disputes.
Canada has no specific law addressing this.
Under UK law, a child has no legal right to choose which parent they may live with.
Unless the law has changed since 2001, the age is 18.
A minor may not decide until they are 18.
If both parents live in Mexico and international law isn't involved, the child can make a declaration at any age, however until they reach legal age (18 in Mexico), the courts will ultimately decide what is in the best interests of the child and award custody based on the same.
The law in Texas has set the age of 14 at which a child can make a choice the court is required to abide by, and even than there are some limitations.
This is concerning. If both parents are abusive, this should be reported to DHR/DCS/Child Welfare and law enforcment.
Maine like most states, do not a specific law that states this. They follow the general rule that a child past the age of understanding can express and opinion. It's up to the judge to decide the weight of it. see links
british law that allowed to live in colonist homes
The laws vary between states but they all have laws about it. If you know the child is a runaway you are keeping that child from their parents. A minor can not decide where to live. So it can be abduction, contributing to the the delinquency of a minor etc. Report it now.
By law, a child does not choose. When you are 18, you are no longer a child, and can choose where you live.
Indiana has no specific law. see links below