As part of the agreement, the British Parliament repealed the Government of Ireland Act 1920 (which had founded Northern Ireland, divided Ireland and asserted territorial right to the whole of Ireland) and the people of the Republic of Ireland amended Articles 2 and 3 of the Irish Constitution, which asserted a territorial right to Northern Ireland. The multi-party agreement is an agreement between the Uk government, the Irish government and most political parties in Northern Ireland. It defines the support of the signatory parties under the Anglo-Irish agreement and provides the framework for various political institutions. It is divided into three parts: both points of view have been recognized as legitimate. For the first time, the Irish government agreed, in a binding international agreement, that Northern Ireland was part of the United Kingdom.  The Irish Constitution has also been amended to implicitly recognize Northern Ireland as part of the sovereign territory of the United Kingdom provided that the majority of the population of the island`s two jurisdictions has agreed to a unified Ireland. On the other hand, the language of the agreement reflects a change in the UK`s emphasis on the one-for-eu law to United Ireland.  The agreement therefore left open the question of future sovereignty over Northern Ireland.  The agreement was approved by voters on the island of Ireland in two referendums on 22 May 1998. In Northern Ireland, in the 1998 referendum on the Good Friday Agreement in Northern Ireland, voters were asked if they supported the multi-party agreement. In the Republic of Ireland, voters were asked whether they would allow the state to sign the agreement and authorize the necessary constitutional changes (nineteen constitutional amendments from Ireland) to facilitate it.
The citizens of both countries had to approve the agreement to implement it. 71% voted in favour of the agreement in Northern Ireland and 94% in the Republic of Ireland. The multi-party agreement required the parties to «use all the influences they might have» to obtain the dismantling of all paramilitary weapons within two years of the adoption of the agreement by referendums.