Your link:Actually dipstick, that's a map after the Arab attack. Here's how it was supposed to go down. Israel for Jews, Jordan for Arabs.
"Ever ask yourself why during the 30 year period - between 1917 to 1947 - thousands of Jews throughout the world woke up one morning and decided to leave their homes and go to Palestine?
"The majority did this because they heard that a future national home for the Jewish people was being established in Palestine, on the basis of the League of Nations obligation under the “Mandate for Palestine” document.
"The 'Mandate for Palestine,' an historical League of Nations document, laid down the Jewish legal right to settle anywhere in western Palestine, between the Jordan River and the Mediterranean Sea, an entitlement unaltered in international law.
"The 'Mandate for Palestine' was not a naive vision briefly embraced by the international community. Fifty-one member countries – the entire League of Nations – unanimously declared on July 24, 1922:
“'Whereas recognition has been given to the historical connection of the Jewish people with Palestine and to the grounds for reconstituting their national home in that country.'”
Between the River and the sea where Jews were still outnumbered two to one by 1948, Golda.
Mandate For Palestine - The Legal Aspects of Jewish Rights
It had more to do with this;
The final British pledge, and the one that formally committed the British to the Zionist cause, was the Balfour Declaration of November 1917.