Nationalism Political Science - Nationalism

What do you think are the limitations of nationalism?

How is a nation different from other forms of collective belonging?

“We have seen that nationalism can unite people as well as divide them, liberate them as well generate bitterness and conflict”. Illustrate your answer with examples.
Neither descent, nor language, nor religion or ethnicity can claim to be a common factor in nationalisms all over the world. Comment.

How is a democracy more effective than authoritarian governments in dealing with conflicting nationalist aspirations?

Illustrate with suitable examples the factors that lead to the emergence of nationalist feelings.