What the fuck is "periods of national identity" supposed to mean? When was it an actual nation that could exclude the militaries of other nations from crossing it's borders?
Palestine had independent states in ancient times and during the Crusades.
Wrong. It was a different nation, and it was controlled by Christians or Jews in those times.
You said there have been no independent states in Palestine. Now you're changing the goalposts. Weren't there Arabs living in Palestine during the Crusades? Wouldn't they be Palestinians?