Which of the following accurately describes a state's sovereignty?

A state's sovereignty refers to its authority and ability to govern itself within its territorial boundaries while still operating under the broader framework of federal law. This concept recognizes that states have the power to enact and enforce laws, regulate local matters, and manage their internal affairs without interference from external authorities, as long as they do not conflict with federal laws.

In this context, the statement that states can govern themselves within their territory captures the essence of state sovereignty, highlighting their autonomy in managing local issues. While states do have significant power, it is not absolute, as they must still adhere to the Constitution and federal laws, which is important to maintaining a balance of power within the federal system. Thus, the correct answer emphasizes the right of states to exercise their authority independently, which is a foundational principle of federalism in the United States.