The essential characteristics of Federation in the USA are:
(A) Supremacy of the Constitution
(B) Distribution of powers amongst the various organs of the federation and of regional units of the federation by the provision of the constitution
(C) Judicial review or enforcement of that supreme constitution as law
(D) The Rule of Law
Choose the correct option:

Correct option is A

The essential characteristics of the Federation in the USA are: • Supremacy of the Constitution (A): The Constitution is supreme. • Distribution of powers amongst the various organs of the federation and of regional units of the federation by the provision of the constitution (B). • Judicial review or enforcement of that supreme constitution as law (C): Judicial review ensures that the Constitution is enforced as law. The Rule of Law (D) is not strictly a defining characteristic of the USA federation.