Israelis would have never won any of those wars if they hadn't been given the land by the UN, and because of the UN giving them land it weakened the Palestinians and basically won the war for the Israelis.
This just proves a point showing that the Palestinians had more people on the land than the Israelis did at the time, meaning that since then the Israelis had gotten very aggressive and drove out all those people from the Arab state.
Something to add also is the history of the wars, so far the Israelis have been far more aggressive than the Palestinians. The Palestinians had been living on that land far longer so far than the Israelis and the Israelis have already started more wars than the Palestinians have.
Actually Palestinians had covered 85% of the land before it was given by the UN
They didn't come back forcefully, they were given land then attacked the Palestinians after they had gotten there. So they didn't take the land on their own, if it wasn't for the UN giving them the land they wouldn't of been able to take Israel
But, the Palestinians would have never lost the wars if the Israelis wouldn't of been given land.
Religion doesn't matter in this situation. The Israelis and Palestinians are two different religion thus this means nothing to the Palestinians.
The Palestinians had never left Israel they have stayed there for all the years, the Israelis had been driven out by the Romans earlier while Palestinians stayed and kept the land how it is today.