Interdisciplinary knowledge greatly enhances the effectiveness of UPSC candidates. Understanding how different fields relate to one another enables aspirants to develop a more comprehensive perspective on issues. For instance, linking geography with economics can illuminate the implications of environmental policies on economic development. This holistic understanding aids in better analysis during exams and the interview phase. Furthermore, an interdisciplinary approach enriches decision-making skills, which are critical for civil servants in addressing complex governance challenges faced in an increasingly globalized world.