Answer :
Final answer:
A unitary system centralizes power with the central government, while a federal system distributes power more evenly between central and regional governments.
Explanation:
A unitary system is a form of political organization where the central government holds the most power, and local governments have limited autonomy, such as those in England, France, and Japan. On the other hand, a federal system like that of the United States, Russia, and Brazil, distributes power more evenly between the central government and regional governments, allowing for greater autonomy at the regional level.
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