31 déc. 1957 - European Economic Community

Description:

An organization promoting economic unity in Europe formed by the consolidation of earlier, more limited agreement. It became the European Union in 1993. In this organization, Western Europe was able to regain its strength and improve society, economy, and industry, putting it at odds with the USSR.

Pic: https://upload.wikimedia.org/wikipedia/commons/thumb/b/b7/Flag_of_Europe.svg/1200px-Flag_of_Europe.svg.png