This treaty, also called the Maastricht Treaty, integrated several European countries, establishing the European Union. It was signed on February 7, 1992 and entered into force on November 1, 1993.
Excerpt from treaty:
"By this Treaty, the High Contracting Parties establish among themselves a European Union, hereinafter called "the Union."
This Treaty marks a new stage in the process of creating an ever closer union among the peoples of Europe, in which decisions are taken as closely as possible to the citizen.
The Union shall be founded on the European Communities, supplemented by the policies and forms of cooperation established by this Treaty. Its task shall be to organize, in a manner demonstrating consistency and solidarity, relations between the Member States and between their peoples."