The British Mandate for Palestine, or simply the Mandate for Palestine, was a legal commission for the administration of the territory that had formerly constituted the Ottoman Sanjaks of Nablus, Acre, the Southern portion of the Beirut Vilayet, and the Mutasarrifate of Jerusalem, prior to the Armistice of Mudros. The draft of the Mandate was formally confirmed by the Council of the League of Nations on 24 July 1922, amended via the 16 September 1922 Transjordan memorandum and which came into effect on 29 September 1923 following the ratification of the Treaty of Lausanne. The mandate ended at midnight on 14 May 1948.
The document was based on the principles contained in Article 22 of the draft Covenant of the League of Nations and the San Remo Resolution of 25 April 1920 by the principal Allied and associated powers after the First World War. The mandate formalised British rule in the southern part of Ottoman Syria from 1923–1948.
The formal objective of the League of Nations Mandate system was to administer parts of the defunct Ottoman Empire, which had been in control of the Middle East since the 16th century, "until such time as they are able to stand alone." The mandate document formalised the division of Palestine, to include a national home for the Jewish people under direct British rule, and Transjordan, an Emirate governed semi-autonomously from Britain under the rule of the Hashemite family.