The principle of popular sovereignty in democratic theory posits that the authority of government rests with the people, reinforcing the idea that citizens have the ultimate power to govern themselves. This concept is fundamental to democracy, as it legitimizes the right of individuals to participate in decision-making processes through elections and civic engagement. Popular sovereignty emphasizes accountability, ensuring that government actions reflect the will of the majority while respecting minority rights. By embracing this principle, democratic societies recognize the importance of citizen participation in shaping policies and governance.