U.S. Commonwealth
A U.S. Commonwealth is a type of political entity that has a unique relationship with the federal government. There are four U.S. Commonwealths: Puerto Rico, Northern Mariana Islands, American Samoa, and U.S. Virgin Islands. These territories have their own local governments and some degree of self-governance, but they are not fully sovereign states.
Commonwealths have different rights and responsibilities compared to U.S. states. For example, residents of these territories are U.S. citizens but do not have the right to vote in presidential elections. They may also have limited representation in Congress, often having a non-voting delegate.