Article VI of the U.S. Constitution addresses national supremacy.
McCulloch v. Maryland.An example of national supremacy clause can be seen in the case McCulloch v. Maryland.
Article VI
supremacy
The National Supremacy Amendments were important because they granted the abolition of slavery, gave black males the right of citizenship, and granted black males the right to vote.
national law over state laws
supremacy clause
This helped advance the principle of national supremacy.
The Supremacy Clause and the Treaty Clause only
national and state governments
Slavery
NAACP National Association for the advancement of colored people