And if you really want to start going down that road, you can just as easily claim that "American" is an invention, a group of disparate immigrant groups amalgamated by sole virtue of a piece of paper (or a couple of pieces of paper) out of whole cloth in territory seized from Britain or from the native population, for which there is no historical basis before 1776.
The difference is, of course, that none of your examples made up ‘whole-cloth’ their national history.
Whereas the Palestinians have... and then use the fabrication to justify the slaughter of innocents.
And that is a vile abomination that must be snuffed out before others try it themselves.
I would also point out that not every ‘people’ has a nation to call home. Tibetans, Kurds, Gypsies, Uighurs, Tamils, etc, etc, etc... do not have a nation to call their own.
What makes the Palestinians any more deserving? In my book, their fabrication of history and their slaughter of innocents make them *LESS* deserving of a homeland than any other people, not more.
And as to what do about their agitation... expel them. Jordan did it with the PLO. Lebanon as well.
Heck, Poland expelled their Germans after WWII. Pakistan, their Indians... and in India, their Pakistanis (more of a religious expulsion, though... with non-Muslims fleeing proto-Pakistan and muslims leaving to join the ‘Dar al-Islam’ of Pakistan).
So it’s not exactly a bad practice.
And then, should none of the countries surrounding Israel care for them... well, that shows the world exactly what Islam truly believes. Bares it all for the world to see.
Which is another net benefit for the world, as then all the lies and half-truths which Islam uses to lull the world will then be ripped away, exposing it’s true heart (one way or the other).