単一欧州議定書
The "objectives" were introduced with the Single European Act as a criterion to make the Structural Funds spending more effective as Regional Policy started to be rationalised in a perspective of economic and social cohesion. The Single European Act, that entered into force in 1987, institutionalised the goal of completing the internal market with a total borders opening, by 31 December 1992. Regional competition would be tighter and a Cohesion Policy was needed to mitigate the negative side effects of market unification.