1943 de-classified CIA document – it is highly educational
– see link below.
The general belief that the present-day inhabitants of Palestine are
Arabs, and therefore foreign to it, is erroneous. Palestinians of Arab
descent are but few. Most Palestinians are descendants of the early
Canaanite families and lived here long before the Israeitish
invasion.
https://www.cia.goV/readingroom/docs/HUSSEINI,%20AMIN%20EL%20%20%20VOL.%201_0049.pdf