I deliberately chose English regions, but "British" will do at a pinch to demonstrate the regional variations within one country. Historically we did have sperate kingdoms for many English regions and many do want regional autonomy, (a recent genetic survey has found that a Geordie is genetically different from a Cornishman, but thats a topic for another forum) not just te scots or the Welsh.
My point was that the same or something similar applies to Palestinians, Syrians, etc. While they were all Ottoman subjects, a Syrian could tell a Palestinian from a Bedouin by their appearance, cultural traits and dialect. Yet all of them were considered a homogenous group: "Arabs", by the Western colonial powers who drew arbitrary lines in the sand and created a country of "Syria", "Palestine", "Jordan", etc.
even Scotland voted against separation.
Palestinians were never a state or kingdom. It is simply a roman name given to three part of the gaza sinai. It was never an autonomous rule nor a people.
How is it similar? They were tribes, arabs, various other races but not palestinian by race, language, religion, culture or anything else. It is simply a foreign designation of name for the area, not an arab name. Till the mandate they never called themselves palestinians or call the land palestine. Even as a sanjak within the syria vilayet it was called jerusalem, beirut, damascus, zor, mount lebanon, safad, nablus. Not since the 16th century had there even been a gaza within syria.
Till the mandate they would never have called themselves palestinian or claimed to have been part of any place called palestine. It was not in their language.