Guest CS,

The history of Palestine is somewhat convoluted- and many here do not bother looking at the facts before making judgements.

There was a Zionist resettlement of "the Holy Land " starting in the 19th Century, as anti-semitism increased in Europe. At the END of WW I, the victorious Allies restructured the lands of the Ottoman Empire, with France getting the Syrian and Lebanese parts, and England getting Mandate Power over the remainder of the Mid-East. The treaties ENDING the war were signed by the new Turkish government, as the successor power to the Ottoman Empire.
The Mandate Palestine territory was formed with the express purpose of being "the Jewish Homeland" by these treaties.

Many Jews settled in Mandate Palestine, buying land from the owners of record ( Mostly absentee Turkish landlords) In about 1924, the Mandate Power, Great Britain, tired of the fighting going on between the Jews and Moslems, declared that 77% of the Mandate Plestine territory would be reserved exclusively for Moslims, and no Jew could own property there or live within that portion. The remaining 33% was to be the Jewish Homeland of the Mandtae's original intent ( Areas determined by proportional populations. Unfortunately, there were NO restrictions on Moslims owning or living in the "Jewish Homeland", and many stayed there for the higher standard of living.
In 1948, when the UN further divided it , the new state of Israel agreed to this set of borders, while the Arab League attacked the new state of Israel, telling all Moslims in the area to flee and the would be given the land after the AL had destroyed the Jews. Some Arab Moslims did flee, about 640,000, while a large number stayed in the areas under Israeli control.
Jerusalem and the West bank were under Jordanian control fro 1948 until 1967- During which time there was no effort made to settle the Palestinian refugees. The remaining Jewish populations of the Arab League countries were driven out ( about 820,000) and had their property confiscated.