Mandate For Palestine
The Mandate for Palestine was a League of Nations mandate for British administration of the territories of Palestine and Transjordan – which had been part of the Ottoman Empire for four centuries – following the defeat of the Ottoman Empire in World War I. Under the mandate, Britain assumed obligations both to the inhabitants of Palestine and to the establishment of a Jewish national home, as set out in the British government's 1917 Balfour Declaration.[2] The mandate was assigned to Britain by the San Remo conference in April 1920, after France's concession in the 1918 Clemenceau–Lloyd George Agreement of the previously agreed "international administration" of Palestine under the Sykes–Picot Agreement. Transjordan was added to the mandate after the Arab Kingdom in Damascus was toppled by the French in the Franco-Syrian War. Civil administration began in Palestine and Transjordan in July 1920 and April 1921, respectively, and the mandate was in force from 29 September 1923 to 15 May 1948 and to 25 May 1946 respectively.
The mandate document was based on Article 22 of the Covenant of the League of Nations of 28 June 1919 and the Supreme Council of the Principal Allied Powers' San Remo Resolution of 25 April 1920. The mandatory power's objective was to administer the territories as a trust until they were "able to stand alone", taking into account the wishes and interests of their inhabitants. However, it was not itself a sovereign authority over the territory, and could not unilaterally transfer sovereignty to itself or independently establish territorial title.[3] The border between Palestine and Transjordan was agreed in the final mandate document, and the approximate northern border with the French Mandate for Syria and the Lebanon was agreed in the Paulet–Newcombe Agreement of 23 December 1920.
UN Library: https://digitallibrary.un.org/record/829707?v=pdf