How did the nationalism impact communal identities in German nations? I don't need an exact answer, and could someone explain what "communal identity" means?

Question

anonymous · Answer

Can you provide a little more context for this please? This may refer to the sentiment of groupings in smaller Germanic "Nation States" but the context will help.

anonymous · Answer

The question is: 
Describe how the development and spread of nationalism as an ideology fostered new communal identities in each of the following:
German nation

Filipino nationalism

Liberian nationalism