The Principal Allied and Associated Powers undertake to negotiate a Treaty between the Polish Government and the Free City of Danzig, which shall come into force at the same time as the establishment of the said Free City, with the following objects:
1. To effect the inclusion of the Free City of Danzig within the Polish Customs frontiers, and to establish a free area in the port;
2. To ensure to Poland without any restriction the free use and service of all waterways, docks, basins, wharves and other works within the territory of the Free City necessary for Polish imports and exports;
3. To ensure to Poland the control and administration of the Vistula and of the whole railway system within the Free City, except such street and other railways as serve primarily the needs of the Free City, and of postal, telegraphic and telephonic communication between Poland and the port of Danzig;
4. To ensure to Poland the right to develop and improve the waterways, docks, basins, wharves, railways and other works and means of communication mentioned in this Article, as well as to lease or purchase through appropriate processes such land and other property as may be necessary for these purposes;
5. To provide against any discrimination within the Free City of Danzig to the detriment of citizens of Poland and other persons of Polish origin or speech;
6. To provide that the Polish Government shall undertake the conduct of the foreign relations of the Free City of Danzig as well as the diplomatic protection of citizens of that city when abroad.
On the coming into force of the present Treaty German nationals ordinarily resident in the territory described in Article 100 will ipso facto lose their German nationality in order to become nationals of the Free City of Danzig.
Within a period of two years from the coming into force of the present Treaty, German nationals over 18 years of age ordinarily resident in the territory described in Article 100 will have the right to opt for German nationality.
Option by a husband will cover his wife and option by parents will cover their children less than 18 years of age.
All persons who exercise the right of option referred to above must during the ensuing twelve months transfer their place of residence to Germany.
These persons will be entitled to preserve the immovable property possessed by them in the territory of the Free City of Danzig. They may carry with them their movable property of every description. No export or import duties shall be imposed upon them in this connection.
All property situated within the territory of the Free City of Danzig belonging to the German Empire or to any German State shall pass to the Principal Allied and Associated Powers for transfer to the Free City of Danzig or to the Polish State as they may consider equitable.
The proportion and nature of the financial liabilities of Germany and of Prussia to be borne by the Free City of Danzig shall be fixed in accordance with Article 254 of Part IX (Financial Clauses) of the present Treaty.
All other questions which may arise from the cession of the territory referred to in Article 100 shall be settled by further agreements.
Source: The Treaty of Peace with Germany, June 28, 1919, International Law Documents. Naval War College, Washington: Government Printing Office, 1920, pp. 18-21.