Is ethnicity a result of cultural differences? Is ethnicity dependent on the practical use and belief in cultural differences? Drawing on a wide-range of classic and recent studies in anthropology and sociology, Thomas Hylland Eriksen examines the relationship between ethnicity, class, gender and nationhood. Using the question 'What is ethnicity?' as his starting point, Eriksen examines the interplay between ideology and ethnicity, how the Internet impacts understanding of ethnicity, identity politics, and the commercialisation of identity. Through this, he reveals that far from being an immutable property of groups, ethnicity is a dynamic and shifting aspect of social relationships. A core text for all students of social anthropology and related subjects, Ethnicity and Nationalism has been a leading introduction to the field since its original publication in 1993. This new edition - expanded and thoroughly revised - is indispensable to anyone seriously interested in understanding ethnic phenomena.