British Mandate of Palestine approved
The Palestine Mandate, or Mandate for Palestine, was a League of Nations Mandate drafted by the principal Allied and associated powers after the First World War and formally approved by the League of Nations in 1922.
By the power granted under the mandate, Britain ruled Palestine between 1920 and 1948, a period referred to as the "British Mandate."
The preamble of the mandate declared:
Whereas the Principal Allied Powers have also agreed that the Mandatory should be responsible for putting into effect the declaration originally made on November 2nd, 1917, by the Government of His Britannic Majesty, and adopted by the said Powers, in favor of the establishment in Palestine of a national home for the Jewish people, it being clearly understood that nothing should be done which might prejudice the civil and religious rights of existing non-Jewish communities in Palestine, or the rights and political status enjoyed by Jews in any other country.
The purported 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."
By the early years of the 20th century, Palestine was becoming a trouble spot of competing territorial claims and political interests. The Ottoman Empire was weakening, and European powers were entrenching their grip on areas in the eastern Mediterranean, including Palestine. During 1915-16, as World War I was underway, the British High Commissioner in Egypt, Sir Henry McMahon, secretly corresponded with Husayn ibn `Ali, the patriarch of the Hashemite family and Ottoman governor of Mecca and Medina. McMahon convinced Husayn to lead an Arab revolt against the Ottoman Empire, which was aligned with Germany against Britain and France in the war. McMahon promised that if the Arabs supported Britain in the war, the British government would support the establishment of an independent Arab state under Hashemite rule in the Arab provinces of the Ottoman Empire, including Palestine. The Arab revolt, led by T. E. Lawrence ("Lawrence of Arabia") and Husayn's son Faysal, was successful in defeating the Ottomans, and Britain took control over much of this area during World War I.
Britain made other promises during the war that conflicted with the Husayn-McMahon understandings.
But Britain made other promises during the war that conflicted with the Husayn-McMahon understandings. In 1917, the British Foreign Minister, Lord Arthur Balfour, issued a declaration (the Balfour Declaration) announcing his government's support for the establishment of "a Jewish national home in Palestine." A third promise, in the form of a secret agreement, was a deal that Britain and France struck between themselves to carve up the Arab provinces of the Ottoman Empire and divide control of the region.
After the war, Britain and France convinced the new League of Nations (precursor to the United Nations), in which they were the dominant powers, to grant them quasi-colonial authority over former Ottoman territories. The British and French regimes were known as mandates. France obtained a mandate over Syria, carving out Lebanon as a separate state with a (slight) Christian majority. Britain obtained a mandate over the areas which now comprise Israel, the West Bank, the Gaza Strip and Jordan.