The Trusteeship Agreement recites that the Government of Australia then undertook to place the Territory of New Guinea under the trusteeship system on the terms set forth in the Agreement. It will be noted that it was Australia who placed the territory under the system. She is described in the agreement as the Administering Authority and she is thereby designated as the sole authority which will exercise the administration of the Territory (art. 2). The expression "administration of the Territory" is not here used in contrast with legislative and judicial powers but covers all governmental authority. In art. 4 there is an example of the narrower use of the word "administration" but that is because of the desire to refer to the executive, the legislative and the judicial powers specifically. Elsewhere "administration" has the wide meaning. When the Trusteeship Agreement speaks of the Administering Authority it is obviously referring to a State externally sovereign which possesses plenary governmental powers to which the Trust Territory is to be submitted but which the State undertakes to exercise for the purposes and in the manner which Chs. XII and XIII of the Charter and the Trusteeship Agreement describe. Article 81 of the Charter, which of course uses general terms, says that the Administering Authority may be one or more States or the Organization itself. Article 4 of the Trusteeship Agreement accordingly provides that the Administering Authority will be responsible for the peace, order, good government and defence of the Territory and for this purpose will have the same powers of legislation, administration and jurisdiction in and over the Territory as if it were an integral part of Australia and will be entitled to apply to the Territory, subject to such modifications as it deems desirable, such laws of the Commonwealth of Australia as it deems appropriate to the needs and conditions of the Territory. Article 5 provides that it is agreed that the Administering Authority, in the exercise of the powers under art. 4, will be at liberty to bring the Territory into a customs, fiscal or administrative union or federation with other dependent territories under its jurisdiction or control, and to establish common services between the Territory and any or all of these territories, if in its opinion it would be in the interests of the Territory and not inconsistent with the basic objectives of the trustee system to do so. Papua clearly enough is a dependent territory within the meaning of art. 5 and what the Papua and New Guinea Act 1949-1957 does is to establish, or more accurately continue in a revised form, an administrative union between the two territories. By s. 6 of that Act parliamentary approval is given to the placing of the Territory of New Guinea under the International Trusteeship System by means of and upon the terms of the Trusteeship Agreement. By s. 8 it is declared to be the intention of the Parliament that the Territory of Papua and the Territory of New Guinea shall continue to be Territories under the authority of the Commonwealth and the identity and status of the Territory of Papua as a Possession of the Crown and the identity and status of the Territory of New Guinea as a Trust Territory shall continue to be maintained. Then s. 9 provides that the Territory of Papua and the Territory of New Guinea shall be governed in an administrative union to the extent and in the manner provided by or in pursuance of the Act. Section 10 says that for the purposes of the Act the Territory of Papua and the Territory of New Guinea shall be together called the Territory of Papua and New Guinea, a name shortened by the definition in s. 5 to the Territory.