@taylan Well... like I said, I think that if you start from that point in time, you're already missing a lot.
Although, from what I've heard, it was in fact the surrounding Arab nations which ordered the local Arabs to leave. Those who stayed (because not everyone obeyed the order), apparently became what now is the Arab population of Israel.
Still, that's not the point in time I'd start at, because even the situation with the British Mandate is rooted in what happened before that, and that's rooted in what happened before and so on and so on.
And I don't think you can divorce the movements of the Arab populations from islamism, or in earlier days, the Arab conquest.
I used to think I could look at what happened in the 1900s and "get" what the conflict was about, but that just led me into a dead end. The mess didn't really start to make sense, until I went way back in history to the preceding centuries.