When was the EU invented?

The European Union (EU) was officially established by the Maastricht Treaty, which came into effect on November 1, 1993. However, its roots can be traced back to earlier organizations, such as the European Coal and Steel Community (ECSC) formed in 1951 and the European Economic Community (EEC) established in 1957. These earlier efforts aimed to foster economic cooperation among European countries in the aftermath of World War II.