Palestine. A country, a state? Mandate period treaty documents between Palestine and Great Britain, Ireland, Iraq, Syria, TransJordan, Turkey, Egypt seem to confirm that it was.

…It’s actually quite simple. If it isn’t the “acknowledged” sovereign territory of Lebanon, Syria, Jordan, Egypt or Israel, it’s a territory of Palestine…

ShortLink http://wp.me/pDB7k-Qh

League of Nations Mandate for Palestine:
The Council of the League of Nations “Whereas 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; “
http://www.mfa.gov.il/MFA/Peace%20Process/Guide%20to%20the%20Peace%20Process/The%20Mandate%20for%20Palestine

League of Nations Convenant: Article 22. Part I. (4th paragraph)
“Certain communities formerly belonging to the Turkish empire have reached a stage of development where their existence as independent nations can be provisionally recognized subject to the rendering of administrative advice and assistance by a Mandatory until such time as they are able to stand alone. The wishes of these communities must be a principal consideration in the selection of the Mandatory.”
http://avalon.law.yale.edu/20th_century/leagcov.asp#art22

League of Nations 30 November 1937 C.495.M.336.1937.VI. Geneva, November 30th, 1937

Chapter X. – Conclusion
” It means that the Arabs must acquiesce in the exclusion from their sovereignty of a piece of territory, long occupied and once ruled by them.”

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Additional research from Michael

Prior to the Mandate – Great Britain, Ireland and Palestine:
“Article 2. The Money Order Service between the contracting countries shall be performed exclusively by the agency of Offices of Exchange.
Article 7. Duplicate Orders shall be issued only by the Postal Administration of the country of payment and in conformity with the regulations established or to be established in that country.
Article 8. When it is desired that an error in the name of the payee shall be corrected, or that the amount of a Money Order shall be repaid to the remitter, application must be made by the remitter to the Chief Office of the country in which the Order was issued.
Article 9. Repayment of an Order shall not, in any case, be made until it has been ascertained, through the Chief Office of the country where such Order is payable, that the Order has not been paid and that the said Office authorizes the repayment.
Article 10. Orders shall remain payable in each country for twelve months after the expiration of the month of issue ; and the amounts of all Money Orders not paid within that period shall revert to and remain the property of the Administration of the country of issue.”

Click to access 144.pdf

Iraq, Syria, TransJordan, Turkey and Palestine:
“Article I. The High Contracting Parties undertake to créât and maintain an ” International Office
for Information regarding Locusts “. Its seat shall be at Damascus, and its expenses shall be defrayed by the Contracting Parties in equal shares.
Article II. The Office shall operate under the authority and control of a Committee composed of delegates of the Contracting States.
Article III. The expenses of setting up the office and the annual expenses of running it shall be supported by the Contracting States according to the conditions laid down by the Organic Statute mentioned in Article II.
Article IV. The contributions of each of the Contracting States shall be paid in through the intermediary of the High Commissariat of the French Republic in the States of Syria to the Bank of Syria and Lebanon at Damascus, whence the money shall be withdrawn, as need arises, on the order of the Director of the Office. Each of the Contracting States shall make its first annual payment within three months from the date when this Agreement is approved by their respective Governments.”
https://iea.uoregon.edu/treaty-text/1926-internationalofficeinformationregardinglocustsentxt

International Commerce Agreement with Egypt and Palestine:
“The Egyptian Government therefore agrees, on the basis of complete reciprocity, to grant most-favoured-nation treatment to products of the soil and of industry originating in Palestine and imported into Egyptian territory for consumption, re-exportation or transit.”
https://iea.uoregon.edu/treaty-text/1926-internationalofficeinformationregardinglocustsentxt