During the time of the British Mandate, who in the British Government opposed the term "Hashemite Kingdom Of Palestine"?
" the Hashemite Kingdom of Palestine. This was the name that King Abdullah (the first) wanted to call his Kingdom after it was separated......The British had given the Jewish authorities an ultimatum — either accept the loss of the East Bank to the Hashemites or risk losing the rights to a homeland (a state) on any of the territory west of the river. The Zionist leadership relented. Thus, the Hashemite Kingdom of Palestine was created. However the British had one caveat for the Hashemite ruler. They advised him not to name his kingdom with the designation of Palestine. Instead, they advised him to call his new kingdom with the purely geographic designation of Transjordan — later to be shortened to simply Jordan.
]The British didn’t want the Hashemites to be challenged by Arabs living west of the river. These Arabs (to the west of the river) had no particular rights under international law other than to live under eventual Jewish sovereignty. In other words, under the revised Mandate for Palestine, there was to be a Jewish state west of the river and a Hashemite Kingdom east of the river." TimesOfIsrael