In History have a peoples been displaced from there land never to have it given back or returned?

yes, right here on our soil....the American Indians....continually...

plenty of peoples have been "displaced" and never returned to "their land." but that's just how it went for most of human history.

war was always a legitimate way of acquiring land. now, because of international law, accords, pacts, treaties, etc. that generally isn't the case in the civilized world any longer.

as for the liberal-tards who will whine about "the white man stealing the indians lands" or "Americans stealing land from Mexico," get over it.

if it wasn't for America, Mexico would have been completed taken over and/or divided by the British, French and Spanish a long time ago. and if Mexico still owned the American southwest it would be a 3rd world wasteland instead of thriving cities that exist there today.

Check out the History of Ireland.

Yes, many times.

yes, all of north and south america comes to mind, probably south africa as well

How about most of North America????!!!