Knowledge of the global economy significantly affects an aspirant's UPSC preparation by providing insights into international relations, trade dynamics, and economic policies. Understanding concepts such as globalization, economic interdependence, and trade agreements is vital for analyzing current affairs and formulating nuanced perspectives on these issues. This knowledge enables candidates to relate economic principles to national policies and socio-economic challenges, reinforcing their arguments in essays and answers. A strong grasp of the global economy also prepares aspirants for questions related to India's position and strategies on the world stage.