The extent of areas falling under the sovereignty of the United States is determined by a combination of legal and historical factors. These areas include the fifty states, the District of Columbia, and various insular possessions. These possessions are often acquired through purchase, annexation, or treaty, and their relationship to the federal government can vary considerably, influencing the rights and responsibilities of their inhabitants. An example includes areas like Puerto Rico, which has a unique status as a commonwealth.
Understanding which areas constitute those under United States authority is crucial for legal, economic, and political reasons. It affects matters of citizenship, taxation, and the application of federal laws. Historically, the acquisition and governance of these locations have shaped the nation’s identity and its role in international affairs, impacting its global influence and trade relations. The determination of applicability of federal laws in these regions affects local economies and social structures.