There were of course several people who held this view, but perhaps the most prominent was Woodrow Wilson, the President of the United States, who pushed for a much more secure Europe after WWI to prevent such things from happening again.
He won 17 states that voted for him to become president
The correct answer is the first option.
It is in the unitary system and the unitary government that all of the key powers are in the hands of the central government. Under this system there is only one power that is the central government and any other administrative units have only so much power as the central government chooses and is willing to delegate.
