<P> The United States Constitution is the supreme law of the United States . The Constitution , originally comprising seven articles , delineates the national frame of government . Its first three articles entrench the doctrine of the separation of powers , whereby the federal government is divided into three branches : the legislative , consisting of the bicameral Congress ; the executive , consisting of the President ; and the judicial , consisting of the Supreme Court and other federal courts . Articles Four , Five and Six entrench concepts of federalism , describing the rights and responsibilities of state governments and of the states in relationship to the federal government . Article Seven establishes the procedure subsequently used by the thirteen States to ratify it . It is regarded as the oldest written and codified constitution in force of the world . </P>
what kind of national legislature did the constitution created
bicameral Congress