What agreement triggered the establishment of the European Union?

Question

Quizplus · Accepted Answer

The Treaty of Rome was signed in 1957 and established the European Economic Community (EEC), which was the precursor to the European Union. The treaty aimed to create a common market among its member states, promote economic cooperation, and facilitate the movement of goods, capital, and people across borders. It also established the European Commission and the European Parliament as key institutions of the EEC/EU.

What Agreement Triggered the Establishment of the European Union