The EU has created many different programs and actions, including:
1) Euro: The Euro is the currency shared by all members of the EU, and works in all European countries except for Britain (which uses the pound) and Western Russia.
2) Trade tariffs: All trade tariffs between the countries in the EU were lifted, and they essentially have 'free trade' within.
3) Unified response: Members of the EU work together, and may take action to help each other in case of situations, such as immigration, invasion, etc.
hope this helps
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