What was the impact of nationalism on the historical development of states and empires?

Positive outcomes-promotes a sense of identity, unites people, promotes pride. negative outcomes-leads to conflict with others, infringes on rights of others, creates xenophobia-the fear that someone will take them over.

This article discusses the origins and history of nationalism to the 1980s. For later developments in the history of nationalism, see20th-century international relations; European Union; and Euroskepticism.