No, actually the Jews were promised ALL of the Palestinian Mandate held by Britain under the Balfour Declaration (based on their help fighting the Turks in WW1 - it wasn’t for free). What later transpired is that Transjordan (today’s Jordan) was sliced off to appease the Arabs (how’s that working out?), and Transjordan was 7/8 of that land area. Then the Jews didn’t even get all of what was left - Egypt grabbed Gaza, and Jordan kept the “West Bank” (Judea and Samaria), so the Jews got less than 1/8 of what they were promised in the Balfour Declaration.
That's what I said. The Jews got a tiny fraction of what was promised. The arabs took most.