Which of the following is not an autocracy

An autocracy is a system of government in which supreme power is concentrated in the hands of one person, whose decisions are subject to neither external legal restraints nor regularized mechanisms of popular control (except perhaps for the implicit threat of a coup d'état or mass insurrection).[1] Absolute monarchy (such as Saudi Arabia) and dictatorship (such as North Korea) are the main historical forms of autocracy. In very early times, the term "autocrat" was coined as a favorable feature of the ruler, having some connection to the concept of "lack of conflicts of interests"

C. to limit the powers of the federal government