Comparing political systems globally reveals a diverse array of governance structures, from democracies to authoritarian regimes. This unit examines key concepts like sovereignty, legitimacy, and authority, while exploring various system types such as presidential, parliamentary, and hybrid regimes. Case studies highlight democratic nations like the US and India, as well as authoritarian states like China and North Korea. The unit also delves into hybrid regimes, emerging trends, and the strengths and weaknesses of different systems, providing a comprehensive overview of global political landscapes.