Fine in the distant future when bioengineering allows one to shape shift down to the genetic level, one could change their sex, but we do not live in such a scifi future.
I am referring to all the other physiological factors. The appearance of an organ and the actual function are two different things, carving a heart to look externally like a kidney does not make it a kidney.
As far as I can tell, identity is cultural. Though you are implying certain identities are programmed into our brains via genetics which is not something I am aware of. Does everyone have an intrinsic sense of gender or even other facets of identity? I don’t know if I have this sense of gender, most of the time I don’t even feel like my body is me. It is merely the instrument I interact with the physical world with.
Not only are you unaware of the Ottoman Empire and its role in the World War 1 but you also forget that said land has been controlled by almost a dozen different empires several of which wipe out the previous inhabitants and installed their own.
The concept of there being an “indigenous population” on a land that humanity has occupied and fought over for 10000 years is laughable. And stolen? They lost a world war.