Which explains the effects of the Congress of Vienna?

Question

The Congress of Vienna’s creation of an economically connected Europe allowed for the creation of the European Union.
The Congress of Vienna’s decision to unify Germany created conflict in Eastern Europe and led to the Seven Years’ War.
The Congress of Vienna’s harsh treatment of France caused the rise in nationalism that led to World War I.
The Congress of Vienna’s establishment of the Concert of Europe became a model for the League of Nations and the United Nations.

Answer 1

No. The Congress of Vienna was signed in 1815, over 150 years before the establishment of the EU.

Answer 2

Yes, D.

Answer 3

thank you

Answer 4

You're welcome.

Answer 5

Bro, this reminds me of Captain America Civil War when they are signing something in Vienna.