The existence of the exclusive, residual and concurrent legislative lists means that Nigerian State is

The existence of the exclusive, residual, and concurrent legislative lists means that the Nigerian state is federal. This is because federalism is a system of government where power is shared between a central government and component units such as states or provinces. In Nigeria, the exclusive legislative list contains matters that only the federal government can legislate upon, the residual legislative list contains matters that only the state government can legislate upon, and the concurrent legislative list contains matters that both the federal and state governments can legislate upon. This sharing of power between the central government and component units is a defining characteristic of federalism.