Through a legal procedure called "devolution," the central government of a unitary system may delegate certain authority to its local governments.
The central government, however, retains the right to absolute power and has the ability to rescind the authority it grants to local governments or to invalidate their actions.
A unitary system is a sovereign state where all powers are vested in the central government, which is governed as a single body. Administrative divisions or subnational units may be established by the central government or eliminated. These organisations only use the authority that the federal government has granted them. Although the central government may repeal the actions of devolved governments or limit or increase their powers, political authority may be granted to regional or local governments through devolution through statute.
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