How did the principal of federalism resolve the issue of national versus sttes rights?

The principle of federalism resolves the issue of national versus states' rights by establishing a division of powers between the national and state governments. This framework allows both levels of government to operate independently in their respective spheres, with the U.S. Constitution delineating specific powers granted to the federal government while reserving others for the states. Additionally, the Supremacy Clause ensures that federal law takes precedence over state law in cases of conflict. This balance aims to protect both national unity and local governance.