This document discusses the concept of sovereignty, including its definition and types. It was first studied technically by Jean Bodin, who defined sovereignty as the absolute and perpetual power to command. There are several types of sovereignty: titular vs actual, where a titular sovereign has legal power but not actual power; legal vs political, referring to lawmaking authority; and de facto vs de jure, with de facto being power exercised without legal right and de jure being a legal claim without actual power. The document also discusses popular sovereignty, where political power comes from the consent of the people through elected representatives.