No, we are not an invented people. Does not a country called the USA exist? Show us where, at anytime in history a country called Palestine existed, especially when it existed exactly where Israel stands today. Since there was never a Palestine there never existed a Palestine people, therefore they are an invented people. Americans MADE their country and became Americans after the country was formed.
So if they have a country they will become a people?
Actually, we were invented by King Philippe II/III (of Spain). It is an incontrovertible fact.