Nationalism
ideology 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 / From Wikipedia, the free encyclopedia
Nationalism is the idea of promoting the interests of a particular nation. Mostly it includes interests in the sovereignty of their own country or homeland. Nationalists think that the best way to make this happen and avoid control or oppression by others is for each group to have their own nation. Some nationalists think this is the best way to save small and weak groups threatened by the mixing of ethnic groups, such as in countries like Yugoslavia and Czechoslovakia.[source?]. The other definition of nationalism is the 'identification with one's own nation and support for its interests, especially to the exclusion or detriment of the interests of other nations.
Not to be confused with Patriotism.
The opposite of nationalism is Internationalism and anti-nationalism.