Final answer:
Emir Feisal argued for the recognition of the Arabs based on the promises made by the Allies during World War I, but these promises were contradicted by agreements like the Sykes-Picot Agreement and the Balfour Declaration.
Step-by-step explanation:
When Emir Feisal addressed the Paris Peace Conference in 1919, he led his argument for the recognition of the Arabs on the basis of the promises made by the Allies during World War I, such as the support for Arab nationalism and the establishment of an independent Arab state. However, these promises were contradicted by the Sykes-Picot Agreement that divided the Middle East into British and French spheres of influence, and the Balfour Declaration that expressed support for a Jewish homeland in Palestine. The Arabs felt betrayed by these actions and sought to regain control of their own destiny.