After the EU (or its predecessors the European Coal and Steel Community and the European Economic Community) were formed, were there any other attempts to construct similar organizations in other continents and regions?

by choconoodles

I took an international relations class and we touched upon institutional liberalism, and how IGOs were becoming increasingly more common, or attempted. Does anyone know what were some of the bigger attempts or successes?

flowerboy98

OPEC springs to mind as a vaguely Middle-Eastern alliance but it isnt nearly as strongly tied together and there is also an African Union that consists of all the African states except Morroco, and many countries are also suspended due to various conflicts and scandals.