Compare how the head of government can be removed for political reasons in Britain and in the United States.
- In Britain the Prime Minister needs the confidence of the House of Commons, so a vote of no confidence can bring the government down at any time.
- In the United States the President has a fixed four-year term and does not depend on the confidence of Congress.
- Congress can remove a President only by impeachment and conviction for serious offences, not for policy disagreement.
Answer: Britain: removal by loss of confidence in the Commons. USA: fixed term, removal only by impeachment. This is the core difference between parliamentary and presidential systems.