Jerusalem was occupied by British forces in December 1917. The League of Nations formally awarded Britain a Mandate over Palestine in 1922. Under the British, Palestine was once again a distinct political and administrative entity for the first time in centuries. The sense of continuity between the ancient, medieval and modern political geography and naming traditions of Palestine eventually came into play in the designation of the British Mandatory Government of Palestine (1918‒1948). This ‘official’ designation of the country as Palestine was universally accepted by the League of Nations, which came into existence in 1920, and by the United Nations which was founded in 1945.

Following the Palestine Exploration Fund, the British Mandatory authorities after 1918 assumed that the Palestinian Arabs (Muslims, Christians and Arab Jews) had also preserved knowledge of the ancient place names which could help identify archaeological sites. Furthermore, in the modern era, and especially during the British Mandate of Palestine, the term ‘Palestinian’ was used to refer to all people residing in Palestine, regardless of religion or ethnicity, including those European Jewish settlers granted citizenship by the British Mandatory authorities.