Question

what are the political and mental changes brought by nationalism in the 19th century​

Answer 1

Answer:

Rising Nationalism was a fundamental underlying cause of World War I. ...

Nationalism grew in the 19th century as a result of Enlightenment thinking about equality, freedom, and democracy, and the concomitant political reforms and revolutions that gave voice to people who had previously been excluded.

Answer 2

Answer:

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Explanation:

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