This is from a point of view of a Brit. A lot of it is Socialistic in nature. Here is the full list:
http://www.independent.co.uk/news/europe/so-what-has-europe-ever-done-for-us-apart-from-441138.html
The more "success" the EU has, the more appealing it is going to appear to people around the world, particularly the US and North America.
Here are a few that I have qualms with, though there are more:
13. Small EU bureaucracy (24,000 employees, fewer than the BBC)
Despite the eurosceptic claims, the number of EU officials is surprisingly small. After the scandal of 1999 when the Brussels based European Commission resigned, strict new rules were imposed on spending.
17. One currency from Bantry to Berlin (but not Britain)
The Euro is now the only real alternative to the dollar on the international stage. You can travel throughout 13 countries and use one currency. Slovenia became the 13th and latest nation to join the single currency this year. Several more nations have yet to meet the necessary criteria.
42. EU gives more, not less, sovereignty to nation states
Switzerland and Norway, two independent countries have little or no negotiating leverage when they deal with the EU. In fact they have less sovereignty than member states who decide the policy. Britons are more able to control their own destiny - in areas from international trade, to environmental protection, to consumer rights - because they are part of a 27 nation, democratic bloc. Real sovereignty, rather than theoretical sovereignty, is enhanced by EU membership.