Zionism
Zionism is a nationalist movement that emerged in the late 19th century, advocating for the establishment and support of a Jewish homeland in in an are called Palestine, which is considered the ancestral land of the Jewish people. It seeks to ensure self-determination and statehood for Jews in their historical homeland.
In the late 19th century this movement called Zionism sought to create a state that was galvanized by thousands of people called the Jews that were often being displaced from nations where they had lived in for centuries.
From the 5th century BCE the area had no distinct people, polity, nor form of government, but included an area that could reach from the Judean mountains to the Rift Valley of Jordan.
After the massive project building the Suez canal the people were from all over the world. They came from many different nations settling there as laborers. These people were not Palestinians and were not a part of any government. Some were Christian, many were Jews and of course Muslims. From this mixed ethnic background people would eventually form different governments.
Christian, Jews, and Muslims would become the new population of an area that had not ruled itself for hundreds of years.
Before the end of WW 1 there was the Balfour Declaration of 1917, in which Britain promised its support for the establishment of a Jewish "national home" in Palestine.
A congress
Finally, in 1919 Arabs living in Palestine joined together in opposition to the Balfour Declaration and a Jewish representative government already forming.
In 1920 the British deemed essential for peace to create "Mandatory Palestine" with Jews, Christians, and Arabs alike. Between 1922 and 1947 the Christian and Moslem population only increased by maybe 20%. The Jewish population during the same time increased by nearly 700% mostly through immigration.
Jews also lived in many other Arab and European nations like Egypt where they were some times kicked out overnight with all their property confiscated and bank accounts seized.
They regularly fled all over the world under the threat of brutal treatment or death and of course many went to Israel which fueled Zionism.
While Arabs could voice an objection the British were the only government with authority.
The means and methods of Zionism would determine their rights and the same is true for Arabs.