According to some textbooks which of the following is not one of the virtues of federalism

Centralization of Powers.

Single and Simple Government.

Explanation:

The opposite of federalism is unitary state, so features of unitary state is not a feature of federalism.

unitary state is a state governed as a single entity in which the central government is ultimately supreme. The central government may create (or abolish) administrative divisions (sub-national units). Such units exercise only the powers that the central government chooses to delegate.

unitary state is a state governed as one single unit in which the central government is supreme and any administrative divisions exercise only powers that their central government chooses to delegate. The great majority of states in the world have a unitary system of government.

Centralization of Powers.

Single and Simple Government.

Uniformity of Laws.

No Distribution of Powers.

Flexible Constitutions.

Potential for Despotism.

Responsibility.