The EU means the European Union, correct?
Some of the causes for the formation of the EU was a struggle for a peace on the continent: in a Union, attacking another country would be a blow to one's own economy. If the European nations were more united then there would be a smaller chance for another war in Europe: and this thinking has proven to be correct.
Another reason is a stronger economy for all the nations involved.
I would say... False because your culture has nothing to do with your language.
The second sentence should be correct
That is true. Strain theory views deviance as the natural outgrowth of the values, norms, and structure of society.