What is the science who examines how government are formed how they operate and how they are related?

The science that examines how governments are formed, how they operate, and how they relate to one another is known as political science. This field analyzes political systems, institutions, behavior, and the theoretical and practical aspects of governance. It encompasses various sub-disciplines, including comparative politics, international relations, and public administration, to understand the complexities of political authority and decision-making processes.