What is the biggest difference between a unitary government and a federal government?

In a unitary system, various state governments have more power than in a federal system.
In a federal system, the prime minister has more power than in a unitary system.
In a unitary system, the central government has more power than in a federal system.
In a federal system, the central government has more power than in a unitary system.

C

Explanation:

In a unitary government, the power is held by one central authority but in a federal government, the power is divided between national government or federal government and local governments or state governments.

ww1 weapons: tank. tanks were used for the first time in the first world war at the battle of the somme. they were developed to cope with the conditions on the western front. the first tank was called 'little willie' and needed a crew of 3.

letter a is the answer