In the early years of the nation and history most of the disputes over the boundaries of national versus state power involved?

In the early years of the nation, disputes over the boundaries of national versus state power primarily involved issues related to the interpretation of the Constitution, particularly the Tenth Amendment, which reserved powers not delegated to the federal government to the states. Key conflicts included debates over the federal government's authority to regulate commerce, impose taxes, and maintain a standing army. Landmark cases, such as McCulloch v. Maryland, further clarified the scope of federal power versus state sovereignty. These disputes shaped the ongoing dialogue about federalism and the balance of power in the United States.