an effort to get Jews on the side of the Allied powers during the First World War, Britain issued the Balfour Declaration. This basically said that the British supported the idea of “the establishment in Palestine of a national home for the Jewish people.” It alsoooo said that “nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities in Palestine.” Point being: they believed Jews should get an official homeland—but not at the expense of other groups already living there.