the best example of the success of nationalism in Europe is the?

1) development of socialism in France

2) industrial revolution in great Britain

3) Establishment of the common market

4) Unification of Germany

The best example of the success of nationalism in Europe is the 4) unification of Germany. This can also be seen as the "reunification of Germany", where although the East and the West of Germany differed in economic and political ideologies, as well as to some extent on religion, there was a strong belief that they were both German and needed to be one sovereign country.