Abstract
Ethnicity, nationality, and ethnic identity remain to be unresolved issues that need to be addressed. It is thus important to compare different approaches to understand the nature of ethnic phenomena and to identify appropriate techniques to understand the essence of «nation-building» concept. First, the article discusses the concepts of nation, ethnicity, changes in ethnic identity where the concepts of ethnos and nation are further explained. Second, the nature, dynamics and factors of the processes of ethnic identity are analyzed. Third, the author seeks answers to questions of why some ethnic identities change, while others remain unchanged. Fourth, ethnicity in conflict, the role of «belonging to a certain ethnic group» is considered. Finally, past and present debates of the primordialist and constructivist approaches to nation-building are described. The main methodology of the article is a comparative analysis of the theoretical literature of foreign and domestic research through the lenses of primordialism and constructivism. The paper argues that there is no reason for all ethnic groups to reach the level of a nation, that constructive theory has advantages at the highest level of integration between nations and ethnic groups in the 21st century, and that ethnic identity is adaptable and changeable over time. The results of this work contribute to further studies and scientific works related to the nation-building in Kazakhstan.