The significance of an interdisciplinary approach in UPSC mains lies in its ability to enhance analytical skills and comprehensive understanding of complex issues. Questions often require candidates to draw from multiple disciplines, connecting political, social, and economic perspectives. This approach fosters critical thinking and encourages candidates to develop well-rounded answers. By integrating knowledge from various subjects, aspirants can present innovative solutions to problems and demonstrate their ability to think holistically. Moreover, an interdisciplinary mindset prepares candidates for practical challenges in civil services, where multifaceted issues demand collaborative problem-solving.