<P> The 1922 census of Palestine recorded the population of Palestine as 757,000, of which 78% were Muslims, 11% were Jews, 10% were Christians and 1% were Druze . In the early years of the Mandate, Jewish immigration to Palestine was quite substantial . In April 1920, violent Arab disturbances against the Jews in Jerusalem occurred, which came to be known as the 1920 Palestine riots . The riots followed rising tensions in Arab - Jewish relations over the implications of Zionist immigration . The British military administration's erratic response failed to contain the rioting, which continued for four days . As a result of the events, trust among the British, Jews, and Arabs eroded . One consequence was that the Jewish community increased moves towards an autonomous infrastructure and security apparatus parallel to that of the British administration . </P> <P> In April 1920, the Allied Supreme Council (the United States, Great Britain, France, Italy and Japan) met at Sanremo and formal decisions were taken on the allocation of mandate territories . The United Kingdom obtained a mandate for Palestine and France obtained a mandate for Syria . The boundaries of the mandates and the conditions under which they were to be held were not decided . The Zionist Organization's representative at Sanremo, Chaim Weizmann, subsequently reported to his colleagues in London: </P> <P> There are still important details outstanding, such as the actual terms of the mandate and the question of the boundaries in Palestine . There is the delimitation of the boundary between French Syria and Palestine, which will constitute the northern frontier and the eastern line of demarcation, adjoining Arab Syria . The latter is not likely to be fixed until the Emir Feisal attends the Peace Conference, probably in Paris . </P> <P> In July 1920, the French drove Faisal bin Husayn from Damascus, ending his already negligible control over the region of Transjordan, where local chiefs traditionally resisted any central authority . The sheikhs, who had earlier pledged their loyalty to the Sharif of Mecca, asked the British to undertake the region's administration . Herbert Samuel asked for the extension of the Palestine government's authority to Transjordan, but at meetings in Cairo and Jerusalem between Winston Churchill and Emir Abdullah in March 1921 it was agreed that Abdullah would administer the territory (initially for six months only) on behalf of the Palestine administration . In the summer of 1921 Transjordan was included within the Mandate, but excluded from the provisions for a Jewish National Home . On 24 July 1922, the League of Nations approved the terms of the British Mandate over Palestine and Transjordan . On 16 September the League formally approved a memorandum from Lord Balfour confirming the exemption of Transjordan from the clauses of the mandate concerning the creation of a Jewish national home and Jewish settlement . With Transjordan coming under the administration of the British Mandate, the mandate's collective territory became constituted of 23% Palestine and 77% Transjordan . The mandate for Palestine, while specifying actions in support of Jewish immigration and political status, stated, in Article 25, that in the territory to the east of the Jordan River, Britain could' postpone or withhold' those articles of the Mandate concerning a Jewish National Home . Transjordan was a very sparsely populated region (especially in comparison with Palestine proper) due to its relatively limited resources and largely desert environment . </P>

When did palestine become part of the roman empire