Partition Plan: The United Nations General Assembly approves a plan for the partition of Palestine.

Mandatory Palestine (Arabic: Filasn; Hebrew: () Pltn (E.Y.), where "E.Y." indicates rtz Yr'l, the Land of Israel) was a geopolitical entity established between 1920 and 1948 in the region of Palestine under the terms of the League of Nations Mandate for Palestine.

During the First World War (19141918), an Arab uprising against Ottoman rule and the British Empire's Egyptian Expeditionary Force under General Edmund Allenby drove the Turks out of the Levant during the Sinai and Palestine Campaign. The United Kingdom had agreed in the McMahonHussein Correspondence that it would honour Arab independence if the Arabs revolted against the Ottomans, but the two sides had different interpretations of this agreement, and in the end, the UK and France divided the area under the SykesPicot Agreement an act of betrayal in the eyes of the Arabs.

Further complicating the issue was the Balfour Declaration of 1917, promising British support for a Jewish "national home" in Palestine. At the war's end the British and French formed a joint "Occupied Enemy Territory Administration" in what had been Ottoman Syria. The British achieved legitimacy by obtaining a mandate from the League of Nations in June 1922. One objective of the League of Nations mandate system was to administer areas of the defunct Ottoman Empire "until such time as they are able to stand alone".During the Mandate, the area saw the rise of nationalist movements in both the Jewish and Arab communities. Competing interests of the two populations led to the 19361939 Arab revolt in Palestine and the 19441948 Jewish insurgency in Mandatory Palestine. After the failure of the Arab population to accept the United Nations Partition Plan for Palestine, the 19471949 Palestine war ended with the territory of Mandatory Palestine divided among the State of Israel, the Hashemite Kingdom of Jordan, which annexed territory on the West Bank of the Jordan River, and the Kingdom of Egypt, which established the "All-Palestine Protectorate" in the Gaza Strip.

The United Nations Partition Plan for Palestine was a proposal by the United Nations, which recommended a partition of Mandatory Palestine at the end of the British Mandate. On 29 November 1947, the UN General Assembly adopted the Plan as Resolution 181 (II).The resolution recommended the creation of independent Arab and Jewish States and a Special International Regime for the city of Jerusalem. The Partition Plan, a four-part document attached to the resolution, provided for the termination of the Mandate, the progressive withdrawal of British armed forces and the delineation of boundaries between the two States and Jerusalem. Part I of the Plan stipulated that the Mandate would be terminated as soon as possible and the United Kingdom would withdraw no later than 1 August 1948. The new states would come into existence two months after the withdrawal, but no later than 1 October 1948. The Plan sought to address the conflicting objectives and claims of two competing movements, Palestinian nationalism and Jewish nationalism, or Zionism. The Plan also called for Economic Union between the proposed states, and for the protection of religious and minority rights.The Plan, devised in cooperation with Jewish organizations, was accepted by the Jewish Agency for Palestine, despite dissatisfaction over territorial limits set on the proposed Jewish State. Arab leaders and governments rejected it and indicated an unwillingness to accept any form of territorial division, arguing that it violated the principles of national self-determination in the UN Charter which granted people the right to decide their own destiny.Immediately after adoption of the Resolution by the General Assembly, a civil war broke out and the plan was not implemented.