In 1921 the UK created the Emirate of Transjordan (Jordan) in the land of Mandatory Palestine
Not quite. Mandatory Palestine already existed as of 1920. Transjordan was not brought under British administration as part of the Mandate of Palestine until 1921 after the Cairo Conference, and even then matters of administration between Palestine and Transjordan were treated differently de facto (and de jure, insofar as questions of Jewish settlement were concerned).
(Also, notwithstanding the conflicting censuses and population surveys throughout the 19th century, the matter of which religious/ethnic demographic constituted a majority in a Jerusalem becomes a lot less impressive when said surveys seemingly show modern Jerusalem not cracking 50,000 people until after World War I.)
STOP PRETENDING THAT JORDAN IS NOT PALESTINE. The "Two-State-Solution" was already implemented when Jordan was created with land from British Mandate Palestine following the same model as the India-Pakistan partition. The Oslo model for the "Two-State-Solution" is dead. If Jews are ethnically cleansed from Judea and Samaria and a new Palestinian Arab State is formed there Hamas will take over and atack Israel from there as it does from Gaza. The Palestinians already have a State in Jordan where they are the majority of the population
The whole area had been ruled by the Islamic caliphate the Turkish Ottoman Empire since 1517. Before that it was ruled by other Islamic powers.
In 1914, A zionist leader let it be known that the solution to the Palestinian problem would be the annexation of Palestine by the British Empire.
In 1916, Britain was in the midst of WWI when it ran out of money and it had to start borrowing from the United States. In 1916, Britain agreed to recognize Arab independence in a large area in exchange for the Sharif of Mecca launching the Arab Revolt against the Ottoman Empire. Thus Britain got the Arabs to unwittingly assist in Britain's plan to create a Jewish state upon what was then Muslim land.
In 1917 came the Balfour Declaration in which Britain informed mega-rich Jewish leader Lord Rothschild that the British government would be amenable to creating a Jewish state. The cash strapped British did not state in the Declaration what they wanted in return from the mega-rich Lord Rothschild.
The Mandate for Palestine was set up by the League of Nations, and Britain was appointed to be the first Mandate. The Mandate administered the territory for the League of Nations.
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In 1914, Herbert Samuel (1st Viscount Samuel, First High Commissioner of Mandatory Palestine) provided his memorandum called The Future of Palestine to his Cabinet colleagues. The memorandum stated: "I am assured that the solution of the problem of Palestine which would be much the most welcome to the leaders and supporters of the Zionist movement throughout the world would be the annexation of the country to the British Empire". Samuel spoke about it with Nathan Rothschild in February 1915, just before that Rothschild's death.
1915-1916 The McMahon-Hussein Correspondence
The McMahon–Hussein Correspondence is a series of letters that were exchanged during World War I in which the Government of the United Kingdom agreed to recognize Arab independence in a large region after the war in exchange for the Sharif of Mecca launching the Arab Revolt against the Ottoman Empire.
Britain enlisted the aid of the Arabs to defeat the Ottoman Empire, but cut a secret deal with France that did not include them.
The Ottoman Empire, an Islamic caliphate, had ruled the Palestinian area since 1517.
1916 SYKES-PICOT (Britain-France) SECRET AGREEMENT
https://avalon.law.yale.edu/20th_century/sykes.asp
Plotting to carve up the Ottoman Empire in 1916.
The Sykes-Picot Agreement: 1916It is accordingly understood between the French and British governments:
That France and Great Britain are prepared to recognize and protect an independent Arab states or a confederation of Arab states (a) and (b) marked on the annexed map, under the suzerainty of an Arab chief. That in area (a) France, and in area (b) Great Britain, shall have priority of right of enterprise and local loans. That in area (a) France, and in area (b) Great Britain, shall alone supply advisers or foreign functionaries at the request of the Arab state or confederation of Arab states.
That in the blue area France, and in the red area Great Britain, shall be allowed to establish such direct or indirect administration or control as they desire and as they may think fit to arrange with the Arab state or confederation of Arab states.
That in the brown area there shall be established an international administration, the form of which is to be decided upon after consultation with Russia, and subsequently in consultation with the other allies, and the representatives of the Shereef of Mecca.
That Great Britain be accorded (1) the ports of Haifa and Acre, (2) guarantee of a given supply of water from the Tigres and Euphrates in area (a) for area (b). His Majesty's government, on their part, undertake that they will at no time enter into negotiations for the cession of Cyprus to any third power without the previous consent of the French government.
That Alexandretta shall be a free port as regards the trade of the British empire, and that there shall be no discrimination in port charges or facilities as regards British shipping and British goods; that there shall be freedom of transit for British goods through Alexandretta and by railway through the blue area, or (b) area, or area (a); and there shall be no discrimination, direct or indirect, against British goods on any railway or against British goods or ships at any port serving the areas mentioned.
That Haifa shall be a free port as regards the trade of France, her dominions and protectorates, and there shall be no discrimination in port charges or facilities as regards French shipping and French goods. There shall be freedom of transit for French goods through Haifa and by the British railway through the brown area, whether those goods are intended for or originate in the blue area, area (a), or area (b), and there shall be no discrimination, direct or indirect, against French goods on any railway, or against French goods or ships at any port serving the areas mentioned.
That in area (a) the Baghdad railway shall not be extended southwards beyond Mosul, and in area (b) northwards beyond Samarra, until a railway connecting Baghdad and Aleppo via the Euphrates valley has been completed, and then only with the concurrence of the two governments.
That Great Britain has the right to build, administer, and be sole owner of a railway connecting Haifa with area (b), and shall have a perpetual right to transport troops along such a line at all times. It is to be understood by both governments that this railway is to facilitate the connection of Baghdad with Haifa by rail, and it is further understood that, if the engineering difficulties and expense entailed by keeping this connecting line in the brown area only make the project unfeasible, that the French government shall be prepared to consider that the line in question may also traverse the Polgon Banias Keis Marib Salkhad tell Otsda Mesmie before reaching area (b).
For a period of twenty years the existing Turkish customs tariff shall remain in force throughout the whole of the blue and red areas, as well as in areas (a) and (b), and no increase in the rates of duty or conversions from ad valorem to specific rates shall be made except by agreement between the two powers.
There shall be no interior customs barriers between any of the above mentioned areas. The customs duties leviable on goods destined for the interior shall be collected at the port of entry and handed over to the administration of the area of destination.
It shall be agreed that the French government will at no time enter into any negotiations for the cession of their rights and will not cede such rights in the blue area to any third power, except the Arab state or confederation of Arab states, without the previous agreement of his majesty's government, who, on their part, will give a similar undertaking to the French government regarding the red area.
The British and French government, as the protectors of the Arab state, shall agree that they will not themselves acquire and will not consent to a third power acquiring territorial possessions in the Arabian peninsula, nor consent to a third power installing a naval base either on the east coast, or on the islands, of the red sea. This, however, shall not prevent such adjustment of the Aden frontier as may be necessary in consequence of recent Turkish aggression.
The negotiations with the Arabs as to the boundaries of the Arab states shall be continued through the same channel as heretofore on behalf of the two powers.
It is agreed that measures to control the importation of arms into the Arab territories will be considered by the two governments.
I have further the honor to state that, in order to make the agreement complete, his majesty's government are proposing to the Russian government to exchange notes analogous to those exchanged by the latter and your excellency's government on the 26th April last. Copies of these notes will be communicated to your excellency as soon as exchanged.I would also venture to remind your excellency that the conclusion of the present agreement raises, for practical consideration, the question of claims of Italy to a share in any partition or rearrangement of turkey in Asia, as formulated in article 9 of the agreement of the 26th April, 1915, between Italy and the allies.
His Majesty's government further consider that the Japanese government should be informed of the arrangements now concluded.
https://en.wikipedia.org/wiki/Balfour_Declaration
The BALFOUR DECLARATION of 1917
Foreign Office
November 2nd, 1917.Dear Lord Rothschild,
I have much pleasure in conveying to you, on behalf of His Majesty’s Government, the following declaration of sympathy with Jewish Zionist aspirations which has been submitted to, and approved by, the Cabinet.
“His Majesty’s Government view with favour the establishment in Palestine of a national home for the Jewish people, and will use their best endeavours 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”.I should be grateful if you would bring this declaration to the knowledge of the Zionist Federation.
Yours sincerely,
/s/ Arthur James Balfour
The Balfour Declaration eventually led to the creation of the Jewish and Palestinian territories under the League of Nations and the United Nations.
1920: TREATY OF SEVRES
https://treaties.fcdo.gov.uk/awweb/pdfopener?md=1&did=63986100 pp PDF
Carving up the Ottoman Empire
The plan dreamed up by the Europeans to carve up the Ottoman Empire would have reduced Turkey to a rump state, so Turkey went to war. That was finally resolved with the Treaty of Lausanne and the creation of the Turkish Republic.
1923: TREATY OF LAUSSANE
https://www.mfa.gov.tr/lausanne-peace-treaty-part-i_-political-clauses.en.mfaLausanne Peace Treaty
Part I.
Political Clauses
Article 1
From the coming into force of the present Treaty, the state of peace will be definitely re-established between the British Empire, France, Italy, Japan, Greece, Roumania and the Serb-Croat-Slovene State of the one part, and Turkey of the other part, as well as between their respective nationals.
Official relations will be resumed on both sides and, in the respective territories, diplomatic and consular representatives will receive, without prejudice to such agreements as may be concluded in the future, treatment in accordance with the general principles of international law.
Section I.
1.Tereitorial Clauses
Article 2.
From the Black Sea to the Aegean the frontier of Turkey is laid down as follows (see Map No.1).
[...]
Mandatory Palestine was a geopolitical entity established between 1920 and 1948 in the region of Palestine under the terms of the League of Nations Mandate for Palestine.
https://www.loc.gov/item/2021666887/
League of Nations
Mandate for Palestine
And Memorandum by the British Government Relating to its Application to Transjordan, Approved by the Council of the League of Nations on September 16th, 1922.
Title Page plus six pages each English and French.
MANDATE FOR PALESTINEWhereas the Principal Allied Powers have agreed, for the purpose of giving effect to the provisions of Article 22 of the Covenant of the League of Nations, to entrust to a Mandatory selected by the said Powers the administration of the territory of Palestine, which formerly belonged to the Turkish Empire, within such boundaries as may be fixed by them; and
Whereas the Principal Allied Powers have also agreed that the Mandatory should be responsible for putting into effect the declaration originally made on November 2nd, 1917, by the Government of His Britannic Majesty, and adopted by the said Powers, in favour of the establishment in Palestine of a national home for the Jewish people, it being clearly understood that nothing should be done which might 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; and
Whereas recognition has thereby been given to the historical connection of the Jewish people with Palestine and to the grounds for reconstructing their national home in that country; and
Whereas the Principal Allied Powers have selected His Britannic Majesty as the Mandatory for Palestine; and
Whereas the mandate in respect of Palestine has been formulated in the following terms and submitted to the Council of the League for approval; and
Whereas by the afore-mentioned Article 22, (paragraph 8) it is provided that the degree of authority, control or administration to be exercised by the Mandatory, not having been previously agreed upon by the Members of the League, shall be explicitly defined by the Council of the League of Nations;
Confirming the said mandate, defines its terms as follows:
Article 1
The Mandatory shall have full powers of legislation, save as they may be limited by the terms of this mandate.
Article 2
The Mandatory shall be responsible for placing the country under such political, administrative and economic conditions as wll secure the establishment of the Jewish national home, as laid down in the preamble, and the development of self-governing institutions, and also for safeguarding the civil and religious rights of all the inhabitants of Palestine, irrespective of race and religion.
Article 3
The Mandatory shall, so far as circumstances permit, encourage local autonomy.
[...]
https://www.un.org/unispal/document/auto-insert-187751/
Future government of Palestine – GA debate – Verbatim record HUNDRED AND TWENTY-FOURTH PLENARY MEETINGHeld in the General Assembly Hall at Flushing Meadow, New York, on Wednesday,
26 November 1947, at 11 a.m.
President: Mr. O. ARANHA (Brazil)
123. Palestinian question: report of the Ad Hoc Committee on the Palestinian Question (document A/516)
[...]
https://www.un.org/unispal/document/auto-insert-178646/
Palestine question/Future government/Partition plan – Ad Hoc Cttee report, recommendationsREPORT OF THE AD HOC COMMITTEE ON THE PALESTINIAN QUESTION
Rapporteur: Mr. Thor THORS (Iceland)
1. The General Assembly, at its ninetieth meeting held on 23 September 1947, established an Ad Hoc Committee on the Palestinian Question, to which it referred the following items:
(a) Question of Palestine: item proposed by the United Kingdom (document A/286);
(b) Report of the Special Committee on Palestine (A/364);
(c) Termination of the Mandate over Palestine and the recognition of its independence as one State: item proposed by Saudi Arabia and by Iraq (A/317 and A/328).
[...]
Israel declared independence May 14, 1948.
For a video of how the Middle East got its borders, see:
https://youtu.be/JN4mnVLP0rU?si=pZvBAaFqom5DOPnT
Why the Middle East’s Borders Guarantee Forever WarsYoutube
37 minutes