Question

what is nationalism​

Answer 1

Answer:

Nationalism is an idea and movement that promotes the interests of a particular nation (as in a group of people), especially with the aim of gaining and maintaining the nation's sovereignty (self-governance) over its homeland. ... It also encourages pride in national achievements and is closely linked to patriotism.

Answer 2

Explanation:

identification with one's own nation and support for its interests, especially to the exclusion or detriment of the interests of other nations.