Why were Europeans eage to createsupranational organizations after World War 2?

Europeans were eager to create supranational organizations after WW 2 because they were very dispersed and distinct. They needed to find a way to unite because every country had their own currency and it was a mess especially after WW 2. Making supranational organizations like the European Union allowed Europe to have the same currency, make it easier to move places, and making it easier to travel around each country.