This `` transfer '' legislation may have a `` sunset clause '' , a legislative provision that nullifies the transfer of power after a specified period , at which point the original division of power is restored ... In addition , Australia has several territories , three of which are self-governing : the Australian Capital Territory ( ACT ) , the Northern Territory ( NT ) and Norfolk Island .
Australia has several territories , three of which are self-governing : the Australian Capital Territory ( ACT ) , the Northern Territory ( NT ) and Norfolk Island .