According to Arend Lijphart's seminal 1999 study, Patterns of Democracy, Spain is classified as semi-federal because it grants some autonomy to Basque regions but does not meet all other criteria necessary to be considered a federation.
angola is federal or unitary
It is unitary It is unitary
Unitary
Unitary
unitary
Unitary.
Japan is a federal system.
Unitary
Unitary.
It is a unitary
Iran is unitary.
it is federal