• The development of theoretical frameworks for intergroup relations and ethnic diversity, contrasting assimilationist expectations with pluralist, exchange-theory, and rational-choice models to explain coexistence and conflict across nations [7], [14], [8], [18], [15].

• Ethnic identity as flexible and context-dependent, emphasizing situational identity, symbolic ethnicity, and shifting status criteria in plural societies; papers show identities that can be invoked or suppressed across settings [2], [15], [1], [13].

• Education as a central arena for managing ethnic diversity, examining classroom interventions, cross-ethnic contact, curriculum reforms, and organizational practices to promote inclusion [16], [12], [5], [11], [3], [6].

• Psychological processes in prejudice and stereotype dynamics, analyzing stereotype fading, diversity as a social-psychological construct, and the shaping of attitudes within diverse student populations [9], [20], [3].

• Public discourse and policy trajectories on pluralism and multiculturalism, critiquing or defending multiculturalism through nation-building arguments and debates about assimilation versus diverse futures [10], [19], [7].