You keep saying that but it is not true. Palestine's final international border was defined several years before the Treaty of Lausanne.
And when did Jordan exist on Palestinian land. Once you understand that you will then see that Palestine was larger than you think.
San Remo conference - Wikipedia, the free encyclopedia
History[edit]
The San Remo conference was hastily convened. It was attended by the prime ministers of Great Britain, France, and Italy, and representatives of Japan, Greece, and Belgium.[6]
Several issues were addressed: a peace treaty with Turkey, League of Nation mandates in the Middle East, Germany's obligations under the Versailles Peace Treaty of 1919, and the Allies' position on Soviet Russia.[7]
Great Britain and France agreed to recognize the provisional independence of Syria and Mesopotamia, while claiming mandates for their administration. Palestine was composed of the Ottoman administrative districts of southern Syria. Under international law, premature recognition of its independence would be a gross affront to the government of the newly declared parent state. It could have been construed as a belligerent act of intervention without any League of Nations sanction.[8]
For France, the San Remo decision meant that most of its claims in Syria were internationally recognized and relations with Faysal were now subject to French military and economic considerations. The ability of Great Britain to limit French action was also significantly diminished.[9] France issued an ultimatum and intervened militarily at the Battle of Maysalun in June 1920, deposing the Arab government and removing King Faisal from Damascus in August 1920. In 1920, Great Britain appointed Herbert Samuel, 1st Viscount Samuel as high commissioner and established a mandatory government in Palestine that remained in power until 1948.[10]
Article 22 of the covenant was written two months before the signing of the peace treaty. It was not known at that time to which territories paragraphs 4, 5 and 6 would relate. The territories which came under the regime set up by this article were three former parts of the Ottoman Empire and seven former overseas possessions of Germany referred to in Part IV, Section I, of the treaty of peace. Those 10 territorial areas were originally administered under 15 mandates.[11]