The relevance of national integration in the UPSC syllabus lies in its role in promoting unity and social harmony among India's diverse population. Understanding this concept is crucial for civil services aspirants as it helps develop insights into the challenges faced by a multi-ethnic and multi-lingual society. Furthermore, it ties into themes like governance, social justice, and public policy. The ability to analyze issues of integration equips aspirants to tackle real-world problems, fostering a sense of responsibility toward creating a cohesive national identity.