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.

15 ish points match the words with their definitions. 1. limits the federal government to powers the constitution specifically delegated to it 1.loose construction 2. gathering for the purpose of creating a constitution to lay down the laws for running the u.s. 2. provision 3. arrangement or groundwork laid to get a 3. faction program going. 4. president is given power to deport any 4. alien and sedition acts alien he deems dangerous alien and sedition acts 5. allowing the federal government all 5. constitutional convention powers not denied it within the constitution 6. a group that may not be in agreement 6. strict construction with the general direction of the larger population.