Thanks for that. The 50’s seem soon to me but I would also imagine the 70’s embargo scooted it along.
The dream of the 20th Century Communist was a unified Europe as a start towards a unified World Government. The 3 little nations of Belgium, Netherlands, and Luxembourg banded together to form Benelux and the EU was beginning to take shape. Benelux did a lot of good to provide transportation for commerce. And now Belgium (probably misspelled) is the seat of unelected power in the EU. Too much government is bad for self-determination.
The European Coal and Steel Community dates back to the 1951 Treaty of Paris; and the particular states involved are noteworthy from an historical standpoint due to the relation to and with each other. That treaty gave rise to the governmental bodies that the EU has to this day in Brussels. The High Authority became the Commission and the General Assembly the Parliament (albeit yet with members unelected until the Treaty of Maastricht) under the 1957 Treaty of Rome, which changed the name to the European Economic Community.
One thing the EU always declared right from its beginning was its affinity with the Charter of the United Nations, which (as I hope everyone here knows) was heavily inspired by, if not directly copied from, the 1936 USSR constitution (thanks to Alger Hiss).