The Balfour Declaration. The "National Home for the Jews" encompassed both areas under the British Mandate until 2/3 was severed and given to the Hashemite clan in 1922:
The Balfour Declaration — Commentary
On November 2, 1917, Britain issued the Balfour Declaration:
His Majesty's Government views with favor the establishment in Palestine of a national home for the Jewish people, and will use their best endeavors to facilitate the achievement of this object, it being clearly understood that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities in Palestine or the rights and political status enjoyed by Jews in any other country.
According to the Peel Commission, appointed by the British Government to investigate the cause of the 1936 Arab riots, "the field in which the Jewish National Home was to be established was understood, at the time of the Balfour Declaration, to be the whole of historic Palestine, including Transjordan."
The Mandate for Palestine's purpose was to put into effect the Balfour Declaration. It specifically referred to "the historical connections of the Jewish people with Palestine" and to the moral validity of "reconstituting their National Home in that country." The term "reconstituting" shows recognition of the fact that Palestine had been the Jews' home. Furthermore, the British were instructed to "use their best endeavors to facilitate" Jewish immigration, to encourage settlement on the land and to "secure" the Jewish National Home. The word "Arab" does not appear in the Mandatory award.
The Mandate was formalized by the 52 governments at the League of Nations on July 24, 1922.
Your Jsource website gives this comment:
According to the Peel Commission, appointed by the British Government to investigate the cause of the 1936 Arab riots, "the field in which the Jewish National Home was to be established was understood, at the time of the Balfour Declaration, to be the whole of historic Palestine, including Transjordan."
Where does it get that quotation from? I read the text of the Peel commission report, and nowhere did I find that quote. Nowhere in the enitre Peel report did I find anything even remotely suggesting that the British recognized all of Palestine as rightfully belonging to the Jews (not that such recognition has any relevence).
So I ask you again: show me a single document, British or League of Nations, that says the Jews are to receive all the land of Palestine for a state.
I find it ammusingly ironic that the pro-Zionist crowd is relying so heavily upon League of Nations mandates to support their case while at the same time flaunting and disparaging the UN, which is nothing more than a post-war version of the League of Nations.
Not that I give much weight to either the UN or League of Nations. I fail to see how Birtish declarations or mandates issued by a now defunct globalist bureaucracy have any relevence today.