Britain gave most of their Post-Great War Palestine Mandate to an Arab prince who named it Jordan.  They sought to divide the rest of Palestine between the Jewish and Arab populations, but the Arab Revolt interrupted them.  Hundreds of Jews died in the riots, and the British leveled entire towns to quell the revolt.  Not wishing to deal with another revolt, the British ended wholesale Jewish immigration.  They hoped that action would lessen tensions.  They were wrong.