Which term refers to the national level of governance in the United States?

The term that refers to the national level of governance in the United States is "Federal." This concept is rooted in the structure of the U.S. government, which operates under a federal system. In a federal system, power is divided between a central government and various regional governments (such as state governments). This distribution allows for a balance where both national and state governments can operate independently within their areas of authority while working together on certain issues.

In the United States, the federal government has the ultimate authority over national matters, such as defense, foreign affairs, and regulating interstate commerce. This distinguishes it from state governance, which manages local issues. Terms like "State," "Provincial," and "Municipal" refer to different levels of government that are subordinate to the national or federal level. Thus, "Federal" accurately encapsulates the concept of national governance in the U.S.