What is the main difference between federal and confederal systems of government? a) in a federal system there is no centralized authority, while in a confederal system power is distributed equally among the states. b) in a federal system there is no centralized authority, while in a confederal system local offices give advice to a centralized authority. c) in a federal system there is centralized authority, while in a confederal system power is distributed equally among the states. d) in a federal system power is distributed equally, while in a confederal system the states have less authority than the central government.