Under the terms of League of Nations A-class mandates each such mandatory territory was to become a sovereign state on termination of its mandate.
After World War II, this occurred with all such mandates except Palestine.

In February 1947, Britain announced its intent to terminate the Mandate for Palestine, referring the matter of the future of Palestine to the United Nations.
The hope was that a binational state would ensue, which meant an unpartitioned Palestine.
British Foreign Secretary Ernest Bevin's policy was premised on the idea that an Arab majority would carry the day, which met difficulties with Harry Truman who, sensitive to Zionist electoral pressures in the United States, pressed for a British-Zionist compromise.
 In May, the UN formed the United Nations Special Committee on Palestine (UNSCOP) to prepare a report on recommendations for Palestine.
The Jewish Agency pressed for Jewish representation and the exclusion of both Britain and Arab countries on the Committee, sought visits to camps where Holocaust survivors were interned in Europe as part of UNSCOP's brief, and in May won representation on the Political Committee.
The Arab states, convinced statehood had been subverted, and that the transition of authority from the League of Nations to the UN was questionable in law, wished the issues to be brought before an International Court, and refused to collaborate with UNSCOP, which had extended an invitation for liaison also to the Arab Higher Committee.
In August, after three months of conducting hearings and a general survey of the situation in Palestine, a majority report of the committee recommended that the region be partitioned into an Arab state and a Jewish state, which should retain an economic union.
An international regime was envisioned for Jerusalem.

The Arab delegations at the UN had sought to keep separate the issue of Palestine from the issue of Jewish refugees in Europe.
During their visit, UNSCOP members were shocked by the extent of Lehi and Irgun violence, then at its apogee, and by the elaborate military presence attested by endemic barb-wire, searchlights, and armoured-car patrols.
Committee members also witnessed the SS Exodus affair in Haifa and could hardly have remained unaffected by it.
On concluding their mission, they dispatched a subcommittee to investigate Jewish refugee camps in Europe.
 The incident is mentioned in the report in relation to Jewish distrust and resentment concerning the British enforcement of the 1939 White Paper.
Under the terms of League of Nations A-class mandates each such mandatory territory was to become a sovereign state on termination of its mandate. After World War II, this occurred with all such mandates except Palestine.
In February 1947, Britain announced its intent to terminate the Mandate for Palestine, referring the matter of the future of Palestine to the United Nations. The hope was that a binational state would ensue, which meant an unpartitioned Palestine. British Foreign Secretary Ernest Bevin's policy was premised on the idea that an Arab majority would carry the day, which met difficulties with Harry Truman who, sensitive to Zionist electoral pressures in the United States, pressed for a British-Zionist compromise.  In May, the UN formed the United Nations Special Committee on Palestine (UNSCOP) to prepare a report on recommendations for Palestine. The Jewish Agency pressed for Jewish representation and the exclusion of both Britain and Arab countries on the Committee, sought visits to camps where Holocaust survivors were interned in Europe as part of UNSCOP's brief, and in May won representation on the Political Committee. The Arab states, convinced statehood had been subverted, and that the transition of authority from the League of Nations to the UN was questionable in law, wished the issues to be brought before an International Court, and refused to collaborate with UNSCOP, which had extended an invitation for liaison also to the Arab Higher Committee. In August, after three months of conducting hearings and a general survey of the situation in Palestine, a majority report of the committee recommended that the region be partitioned into an Arab state and a Jewish state, which should retain an economic union. An international regime was envisioned for Jerusalem.
The Arab delegations at the UN had sought to keep separate the issue of Palestine from the issue of Jewish refugees in Europe. During their visit, UNSCOP members were shocked by the extent of Lehi and Irgun violence, then at its apogee, and by the elaborate military presence attested by endemic barb-wire, searchlights, and armoured-car patrols. Committee members also witnessed the SS Exodus affair in Haifa and could hardly have remained unaffected by it. On concluding their mission, they dispatched a subcommittee to investigate Jewish refugee camps in Europe.  The incident is mentioned in the report in relation to Jewish distrust and resentment concerning the British enforcement of the 1939 White Paper.
United Nations Partition Plan for Palestine