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Step-by-step explanation:
A system of government in which powers are divided between the a central government operating nationally in a country and the states government is known as Federalism or say Federal Government. Federal Government has the Judiciary, legislative and the executive arms or branches of government, which is also applicable to state governments, the state government also can create local governments. Not all power is given to the Federal Government according to the 10th Amendment, some powers are given to the state in which Federal Government has no such power.
Nonetheless,few of the things the federal government guarantees state government the following things;
(1). PROTECTION: apart from the normal protection against criminality, the federal government guarantees the state government from other countries from invading into the states' territory.
(2). STABILIZING INTERNAL DISORDER: federal government help to protect and stabilize any internal disorder in the states.