Only if the parents give permission. The age of majority in most places is 18. Until then you are the responsibility of your parents. They determine where you live and much of what you can do.
Yes, a twelve year old can move in with the other parent.
Yes, with parental consent.
Not without parental permission.
probably if the parents agree
You can move out when you are 16, unless: You are subject to an ASBO or other legal restraint that stipulates where you must live; You are in the UK seeking asylum as part of a family.
He is an adult and you can ask him to move out if you want.
yes
No. You have to be 18 to do that.
Not without parental permission.
No
No, a 17 year old can not move out with a 19 year old in Illinois without parent approval. If the 17 year old has approval, they can move out.
At 18 a person is an adult and can move where they wish.