Accession Treaty of Spain to the European Economic Community

The Accession Treaty of Spain to the European Communities is a treaty for the accession of Spain to the European Economic Community —now the European Union— and was signed on June 12, 1985, in the Hall of Columns of the Royal Palace of Madrid to enter into effect on January 1, 1986. This incorporation was carried out at the same time as that of Portugal.

Source: Wikipedia — Accession Treaty of Spain to the European Economic Community (CC BY-SA 4.0)