Government of Australia
The Commonwealth Constitution also says that the States can agree to give any of their powers to the Commonwealth. This can be done by an amendment to the Constitution through a referendum. More commonly, if all the states agree, then all state and Commonwealth parliaments pass laws to allow the transfer. These "transfer" laws may have a "sunset clause". This is a part of the law that means the law is only in place for a certain time. After this, the original division of powers is put back.