Answer:
Unitary states are the opposite of federations, in which governing power is shared by a national government and its subdivisions. The unitary state is the most common form of government in the world. In a unitary state, the central government may grant some powers to its local governments through a legislative process called “devolution.”
Examples: Unitary republics
Afghanistan
Albania
Algeria
Angola
Armenia
Azerbaijan
Bangladesh
Belarus
There are a bunch more, but there would be no space in the box. And plus, it's over 210 countries!
