In a unitary system of government, power is a) held by state governments. b) held by a central government. c) held by a single person. d) held by a group of people.

The correct answer is B.

A unitary system of goverment is constituted by a central goverment with unlimited powers, as there is no power division, and power is only delegated to subordinated units if the goverment decides to do so. In any case, the actions of these subordinates can be abolish or vetoed by the supreme government.

Alternatively, in most modern democracies, division of powers exists and divides the power of the state in three branches: legislative, executive and judiciary.  

the results of roman expansion produced social conflict and civil war. julius caesar gained power and became a dictator but was then assassinated. the reign of augustus began a long period of imperial rule and peace in the roman empire. rome faced the problems of how to maintain peace, law, and order.

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