Convention on the association of the Netherlands Antilles with the European Economic Community of the Netherlands, proclaimed in 1954, instituted a Kingdom in which the three parties—the Netherlands, the Netherlands Antilles, and Suriname—participated on basis of equality, the Netherlands in 1957 only negotiated the Treaties of Rome on behalf of itself. A special protocol attached to both the Treaty establishing the European Economic Community and the Treaty establishing the European Atomic Economic Energy Community specifically declared that the Kingdom was entitled to ratify the treaties for the Netherlands and Netherlands New Guinea only, or for the Kingdom as a whole. Both treaties were indeed subsequently ratified for the Netherlands and Netherlands New Guinea
Convention on the association of the Netherlands Antilles with the European Economic Community only. A "Declaration of Intent on the association of Surinam and the Netherlands Antilles with the European Economic Community", however, was attached to the Final Act of the Intergovernmental Conference for the Common Market and EURATOM: Suriname became already associated with the European Economic Community on 1 September 1962, by virtue of a Supplementary Act completing the instrument of ratification of the Kingdom of the Netherlands. This was possible, because the protocol attached to the EEC Treaty did not oblige the Kingdom of the Netherlands to only ratify on behalf of the Netherlands and Netherlands New Guinea, but rather established