I want to know the answer to the following question:
What did nationalism in music sometime echo?
All the background I'm provided with is that "There was also a rise, especially toward the end of the era, of nationalism in music (echoing, in some cases, political sentiments of the time), as composers such as Edvard Grieg, Nikolai Rimsky-Korsakov, and Antonín Dvořák echoed traditional music of their homelands in their compositions.". Is that enough to answer the question?