What year did XXX start?
Mandatory Palestine
Mandatory Palestine (Arabic: فلسطين‎ Filasṭīn; Hebrew: פָּלֶשְׂתִּינָה (א``י) Pālēśtīnā (EY), where ''EY`` indicates ''Eretz Yisrael``, Land of Israel) was a geopolitical entity under British administration, carved out of Ottoman Southern Syria after World War I. British civil administration in Palestine operated from 1920 until 1948.