Democracy is a political system in which power is vested in the people, allowing for participation in decision-making, freedom of expression, and protection of individual rights. In contrast, totalitarianism is a centralized system of government that seeks to control all aspects of public and private life, often led by a single party or leader. The stark differences between these two systems are highlighted in the context of post-World War II Europe, especially regarding how nations like Germany were divided and governed.