You mean Arab, as Palestinians are not a specific people. And if you were self governing you would have had your own stamp, your own coin, you own constitution. The Ottomans were selling land to Jews, which had to be approved by Islamic Courts. It was good business because Jews had to pay an extra tax.
As for your history: Since the invention of Islam, Arabs have a historical track record. Egyptians were not Arabs, nor did they speak Arabic. Syrians (Assyrians) were not Arabs, nor did they speak Arabic, Moroccans, Libyans, and Tunisia (Berbers) were not Arabs, nor did they speak Arabic, Iraqis (Kurds, Assyrians, Armenians, Azides, etc) were not Arabs nor did they speak Arabic, Libya was not Arab, nor did they speak Arabic, the Sudan (tribal Africa) was not Arab, nor did they speak Arabic, Tunisia was not Arab, nor did they speak Arabic. Why are they all called “Arab” Countries, “Arab” States, belong to the League of “Arab” Nations, and have to live under some form of Islamic Sharia?
Why does the banner of Islam and the Palestinian Flag with the colors of former Caliphates fly of the Holy City of Bethlehem, the birthplace of the very Jewish Jesus? And where have all the Christians gone?