Answer:
to unify europe economically
Step-by-step explanation:
The European Union has 27 countries that are members, and the main purpose of this union is the unification of trade amongst all 27 of these countries that are a part of it.
Economically, to achieve this:
There is the elimination of all sorts of border controls between member nations. This gives allowance for goods and people to flow in freely.
Also no tariffs or duties are imposed on member nations of the European Union.