Has there ever been a country named Palestine? The eariest reference I found was when Yasser Arafat addressed the UN, pistol in his belt, was Nov. 13, 1974 when he represented the PLO.It was the first time the leader of a non-state organization (the Palestine Liberation Organization, or PLO) was invited to address the UN. (Quote from ChatGPT.) In other words, there was no Palestine at that time. I am unaware that its "non-state has changed.
