Answer:
Article VI of The United States Constitution states that the "Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all treaties made or shall be made, under the Authority of the United States, shall be the Supreme Law of the Land."
Step-by-step explanation:
The Constitution of the United States established a system of government and serves as the primary source of law. While each individual state has its own constitution, "Constitutional law" generally refers to such law of the federal government.