The following are the ideas matched to the correct principle of government:
1. Federalism - Divides the powers of government between central and state governments: Different lists of subjects of different governments are enumerated into the Constitution.
2. Separation of powers - Divides the powers of government into different branches: The powers are divided between the legislature, the judiciary, and the executive.
3. Checks and balances - Each branch of government has certain powers that prevent the abuse of powers: Each branch is autonomous yet under the control of the other.