The supremacy clause forms the roots of what aspect of the country government system

Federalism

Explanation:

The Supremacy Clause, which is found in Article VI of the U. S. Constitution, establishes that all federal laws are the supreme law of the land and therefore all states, federal officers and judges are bound by it, meaning that in case of a conflict between state and federal laws, the federal laws is the one that shall prevail.

By describing this relationship between federal and state power, in which federal law takes preference over state law, the Supremacy Clause establishes the root of the country government system: federalism.

The Supremacy clause forms the root of the aspect of "federalism" within the country's government system. Although power is shared between the federal government reigns supreme.